Questions on Word Problems: Mixtures answered by real tutors!

Tutors Answer Your Questions about Mixture Word Problems (FREE)

Question 1032341: The measured gestation period of six wild boars in Britain yield sample data (in days): 114, 117, 122, 113, 114, 126
Assuming that the population of gestation periods is normally distributed, an 80% confidence interval for the mean gestation period in days of wild boars is about

A 117.7�2.0
B 117.7�2.5
C 117.7�4.3
D 117.7�2.8
E 117.7�3.2

Click here to see answer by stanbon(75887)

Question 1032332: The life span of brand-A light bulbs is normally distributed with a mean of 800 hours and a standard deviation of 40 hours. The company wishes to advertise that 90% of their light bulbs will last longer than X hours. What is the approximate value of X?

A 734.2
B 878.4
C 721.6
D 851.2
E 748.8
Click here to see answer by Theo(13342)

Question 1032471: how many 20% acid solution should be mixed with 6 oz of 30% acid solution to produce a mixture that is 28% acid?
could u make a chart because I like visuals. I want to be able to use the same concept with other similar mixture problems. Thanks.
Click here to see answer by stanbon(75887)

Question 1032531: A water tank contains 86 liters when it is 20% full. How many liters does it contain when it is 75% full?
Click here to see answer by Cromlix(4381)

Question 1032530: Pls help me solve this. this is the last equation for my homework.

Robert has 35 coins consisting dimes and quarters. If the total value is $5.90, how many of each kind of coin are there?
Click here to see answer by stanbon(75887)

Question 1032509: The table shown here represents a discrete probability distribution of the random variable X which represents the number of sales made on a randomly selected workday by an inside salesperson for an electrical equipment wholesaler.
X 0 1 2 3 4
P (x) p 0.38 0.34 0.06 0.01
The probability that the inside salesperson will make at least two sales on a randomly selected day is about?
A) 0.07
B) 0.41
C) 0.34
D) 0.93
E) 0.59
Click here to see answer by jim_thompson5910(35256)

Question 1032504: Computer chips are shipped in cases holding 15,000 chips. There is a two percent chance that a randomly selected chip will be unusable for some reason. The average number of unusable chips per case is about

A 30
B 15
C 200
D 2
E 300
Click here to see answer by fractalier(6550)

Question 1032589: A chemist has two solutions of HNO3. One has a 40% concentraiton and the other has a 25% concentration to obtain 58 liters of a 35% solution. How many liters of each solution must be mixed to obtain 58 liters of a 35% solution?
Click here to see answer by Edwin McCravy(20055)

Question 1032006: A stationery company sells two types of notepads to college bookstores, the first wholesaling for 40� and the second for 70�. The company receives an order for 570 notepads, together with a check for $282. If the order fails to specify the number of each type, how should the company fill the order?
Click here to see answer by Edwin McCravy(20055)

Question 1029502: Adj needs 12 songs he has 300 to choose from how many different ways can he arrange them
Click here to see answer by Edwin McCravy(20055)

Question 1032644: A 30 oz can of lemonade drink mix costs $1.80. At that rate, how much will a 21 oz can cost?
Click here to see answer by fractalier(6550)

Question 1032645: how many ounces of 10% alcohol solution must be mixed with 16 ounces of 15% alcohol solution to make 11% alcohol solution
Click here to see answer by fractalier(6550)

Question 1032797: 7. Evan�and�Nathan�are�electricians.�Evan�uses�the�equation�y�=�30x�to
calculate�the�amount�he�earns�for�x�hours�of�work.�The�graph�below
shows�the�amount�Nathan�earns�for�work.
What�is�the�difference�in�the�amounts�Evan�and�Nathan�earn�per�hour?
Click here to see answer by Alan3354(69443)

Question 1032858: i have 60% of bottle of syrup left,if i use 10 oz,how many oz did the bottle originally hold
Click here to see answer by rfer(16322)

Question 1032875: How many liters of water must be added to 26 liters of a 15% antifreeze solution to dilute it to a 12% solution?
Click here to see answer by josgarithmetic(39617)

Question 1032875: How many liters of water must be added to 26 liters of a 15% antifreeze solution to dilute it to a 12% solution?
Click here to see answer by ikleyn(52781)

Question 1033057: What would be the remainder when the sum of a 2 digits no. And the no. Obtained its dogits is divided by 11?

What would be the remainder when the difference of a 3 digit number and the number obtained by reversing the digits is divided by 99?

Click here to see answer by solver91311(24713)

Question 1033058: What would be the remainder when the sum of a 2 digits no. And the no. Obtained its dogits is divided by 11?

what wpuld be the remainder when the difference of 3 digit no and the no obtained by reversing the digit is divided by 99 ?

Click here to see answer by stanbon(75887)

Question 1033103: It costs $480.00 to rent an apartment on the Gold Coast for a weekend
Last year it cost $400.00.
What method below shows how you would calculate the % increase?
A. (480-400)�480�100%
B. (400-480)�480�100%
C. (480-400)�400�100%
D. (400-480)�480�100%
Because more people are visiting the Gold Coast,the rental price for next year is predicted to increase by 10%. How much will Shirley have to pay next year to rent an apartment for a weekend?
Click here to see answer by Theo(13342)

Question 1033124: A certain quantity was taken from a ten liter 30% alcohol solution and replaced by pure alcohol so as to produce 51% alcohol solution. How many liters were taken and replaced?
Click here to see answer by Edwin McCravy(20055)

Question 1033173: How many g of gold should a coin of 45 % gold be if when combined with a 11 g pure gold necklace, it forms a metal that is 71 % gold?
Click here to see answer by josmiceli(19441)

Question 1033186: Sally has two bags of nuts; one with seventy-nine percent peanuts, and the other with twenty-seven percent peanuts. To make a six lb bag of fifty-eight percent peanuts, how much of each should Sally use?
Click here to see answer by addingup(3677)

Question 1033185: Sandy needs 14 lb of metal with 50 % silver. If Sandy combines one metal with 16 % silver, and another with 78 % silver, how much of each metal does Sandy need?
Click here to see answer by fractalier(6550)

Question 1033211: You need a 80% alcohol solution. On hand, you have a 225 mL of a 15% alcohol mixture. You also have 95% alcohol mixture. How much of the 95% mixture will you need to add to obtain the desired solution?
Click here to see answer by josmiceli(19441)

Question 1033212: You need a 20% alcohol solution. On hand, you have a 180 mL of a 5% alcohol mixture. You also have 65% alcohol mixture. How much of the 65% mixture will you need to add to obtain the desired solution?
Click here to see answer by jorel555(1290)

Question 1033215: A half cup of milk has 4 grams of protein. Using a proportion, find the number of grams of protein in 2 and 1/4 (one-fourths) cups of milk.
Click here to see answer by josgarithmetic(39617)

Question 1033229: A coffee distributor needs to mix a(n) Rift Valley coffee blend that normally sells for $8.00 per pound with a Mexican Shade Grown coffee blend that normally sells for $10.40 per pound to create 20 pounds of a coffee that can sell for $8.12 per pound. How many pounds of each kind of coffee should they mix?
A) Write an equation using the information as it is given above that can be solved to answer the question.
) Answer: They must mix�
�pounds of the Rift Valley Blend�
�pounds of the Mexican Shade Grown Blend.�
Round your answers to the nearest whole number of pounds.
Click here to see answer by josgarithmetic(39617)

Question 1033352: Depreciation is the decrease or loss in value of an item due to age, wear, or market conditions. We usually consider depreciation on expensive items like cars. Businesses use depreciation as a loss when calculating their income and taxes.
One company buys a new bulldozer for $94500. The company depreciates the bulldozer linearly over its useful life of 16 years. Its salvage value at the end of 16 years is $19300.
A)� Express the value of the value of the bulldozer,�V, as a function of how many years old it is,�t. Make sure to use function notation.
�B)� The value of the bulldozer after 14 years is $
�
Click here to see answer by addingup(3677)

Question 1033350: A coffee distributor needs to mix a(n) Rift Valley coffee blend that normally sells for $8.00 per pound with a Mexican Shade Grown coffee blend that normally sells for $10.40 per pound to create 20 pounds of a coffee that can sell for $8.12 per pound. How many pounds of each kind of coffee should they mix?
A) Write an equation using the information as it is given above that can be solved to answer the question. Use�x as your variable to represent the quantity of Rift Valley coffee blend.
Equation:
They must mix�
�pounds of the Rift Valley Blend�
pounds of the Mexican Shade Grown Blend.�
Round your answers to the nearest whole number of pounds.
Click here to see answer by josmiceli(19441)

Question 1033421: How many ounces of a 15% alcohol solution and a 42% alcohol solution must be contained to obtain 69 ounces of a 24% solution?
Click here to see answer by Boreal(15235)

Question 1033421: How many ounces of a 15% alcohol solution and a 42% alcohol solution must be contained to obtain 69 ounces of a 24% solution?
Click here to see answer by ikleyn(52781)

Question 1033433: How much pure water must be added to 4.5 litres of 87% acid solution to dilute it to 64% solution ?
Click here to see answer by Alan3354(69443)

Question 1033433: How much pure water must be added to 4.5 litres of 87% acid solution to dilute it to 64% solution ?
Click here to see answer by josmiceli(19441)

Question 1033433: How much pure water must be added to 4.5 litres of 87% acid solution to dilute it to 64% solution ?
Click here to see answer by jorel555(1290)

Question 1033486: Two cars started at sunrise and each travelled at a constant speed,one from city A to city B and the other from city B to city A on the same highway.they met at noon and without stopping and arrived at city B at 4 p.m and at city A at 9 p.m.required:Determine the sunrise time for that day
Click here to see answer by ikleyn(52781)

Question 1033582: how much 12% acid must be added to two gallons of pure water to get a mixture that is 7% acid?
Click here to see answer by robertb(5830)

Question 1032506: An economist wishes to estimate the proportion of all businesses in the state that employ at most 15 workers. To do so, he examines 100 randomly selected businesses from the state. The population of interest to the economist is defined as

A All businesses in the state except the 100 businesses in the sample
B All businesses in the sample that employ at most 15 workers
C All businesses in the state that employ at most 15 workers
D The 100 businesses in the sample
E All businesses in the state

Click here to see answer by robertb(5830)

Question 1032505: The information in the folowing two way contingency table relates the make of a new light vehicle (American, Asian, European) and the age of the person
18-34 35-64 65 and older
American 0.06 0.31 0.10
Asian 0.05 0.30 0.07
European 0.01 0.05 0.05
A) The probability that a randomly seleted new light vehicle is a European make is about?
B) The probability that a randomly seleted new light vehicle is a European make, given that the purchaser is 65 and older, is about?
Click here to see answer by robertb(5830)

Question 1033593: Ricky adds 11L of water to a 60.5% solution of alcohol in water. If the new concentration is 36.3%, how much was the original solution?
A. 5.5 l
B. 11 L
C. 16.5 L
D. 22 L
Click here to see answer by Alan3354(69443)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245