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Question 1033626: How many millilitres of water must be added to 240 milliliters of a 25% sulphuric acid solution to reduce the percentage of sulphuric acid in the new solution to 10%?
Click here to see answer by mananth(16946)

Question 1024676: How much sodium chloride is needed to make 325 ml of a 20 percent w/v solution in water
Click here to see answer by jorel555(1290)

Question 1033671: Nico invest 6% and $1500 less than that amount at 3%. the investment total of %171 interest in1 year. how much did he invest at each rate?
Click here to see answer by stanbon(75887)

Question 1033764: The function C(x)=25x + 80000 express the total cost (C)(in $) of manufacturing x units of a product. If the maximum number of units which can be produced equals 20000, state the restricted domain and range for this function.
PLEASE HELP ME FIND SOLUTION TO THAT PROBLEM, THANKS.
Click here to see answer by Theo(13342)

Question 1033801: how many g of gold should a coin of 33% gold be if when combined with a 5 g pure gold necklace it forms a metal that is 70% gold ?
A thirteen L solution that was nine percent vinegar was mixed with four L
Solution that was sixty-eight percent vinegar. Find the concentration of vinegar
Jason mixed 8mL of a salt solution with 10 mL of a 47% salt solution to make a 45 % salt solution . Find the percent salt concentration of the first solution.

Click here to see answer by stanbon(75887)

Question 1033939: A solution contains 15 milliliters of HCl and 45 milliliters of water. If another solution is to have the same concentration of HCl in water but is to contain 132 milliliters of water, how much HCl must it contain?
Click here to see answer by josmiceli(19441)

Question 1034025: She needs to prepare 24 ounces of a 10% hydrochloric acid solution. Find the amount of 12% solution and the amount of 6% solution she should mix to get this solution
Click here to see answer by fractalier(6550)

Question 1033967: Assume that a manufacturer can purchase a needed component from a supplier at a cost of $8 per unit, or it can invest $40,000 in equipment and produce the item at the cost of $5.50 per unit.
i) Determine the quantity for which total costs are equal for the make and buy alternatives.
ii) What is the minimum cost alternative if 15,000 units are required? What is the minimum cost?

PLEASE HELP ME FIND IT, THANKS.
Click here to see answer by jorel555(1290)

Question 1034185: Plz solve- 3 men and 18 children together take 2 days
to complete a piece of work. How many days
will 18 children alone take to complete the
piece of work, if 6 men alone can complete the
piece of work in 3 days?
Click here to see answer by ikleyn(52781)

Question 1019134: A new labor contract provides for a wage increase of $1 per hour and a reduction of 5 hours in the workweek. A worker who received $500 per week under the old contract will receive $495 per week under the new contract. How long was the workweek under the old contract?
Click here to see answer by jorel555(1290)

Question 1007306: An ore contains 18% of iron.how many tons of ore to the nearest 10 tons will yield 25 tons of iron

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Question 1008160: A pharmacist wishes to mix a solution that is 6% Minoxidil. She has on hand 80 ml of a solution and wishes to add some 8% solution to obtain the desired 6% solution. How much 8% solution should she add?
Click here to see answer by jorel555(1290)

Question 1004768: A store sells tents,sleeping bags,and camp stools. a customer buys a tent 3 sleeping bags, and 5 camp stools, for $213. The price of the tent is 7 times the cost of a camp stool. the cost of a sleeping bag is $26 more than the cost of a camp stool. find the cost for each item.

Click here to see answer by jorel555(1290)

Question 1008351: The florist advertises roses for $2 a bud and carnations for $0.75 a flower. If Sebastian pays $20.50, excluding tax, for a bouquet of fourteen flowers, how many of each flower are in the bouquet?
Click here to see answer by jorel555(1290)

Question 1008353: Raisin Rich breakfast cereal is 10% protein. A dietician wants to raise the percentage of protein per serving to 20%. The high-protein grain that will be mixed with the cereal is 40% protein. How many grams of each should be mixed together to make a 12 grams serving of cereal with the proper percentage of protein?
Click here to see answer by jorel555(1290)

Question 1008357: Concrete is made of cement, water, and aggregate (sand and gravel). Aggregate should make up 75% of the total mass of concrete. If you have a concrete mix that is 60%aggregate, how many kilograms of this mix and how many kilograms of aggregate should be combined to form 48 kilograms of the concrete mix with the proper percentage of aggregate?
Click here to see answer by jorel555(1290)

Question 1034425: The sum of the reciprocals of two consecutive positive numbers is 17/12. Find the numbers.
Click here to see answer by stanbon(75887)

Question 1034425: The sum of the reciprocals of two consecutive positive numbers is 17/12. Find the numbers.
Click here to see answer by Theo(13342)

Question 1034425: The sum of the reciprocals of two consecutive positive numbers is 17/12. Find the numbers.
Click here to see answer by ikleyn(52781)

Question 1034450: One alloy is 2 parts iron to 3 parts silver and another alloy is 7 parts iron to 3 parts silver. How much of each should be combined to produce a 30 pound alloy that is 1 part iron to 1 part silver?
Click here to see answer by jorel555(1290)

Question 1004366: A chef is using a mixture of two brands of Italian dressing. The first brand contains
7%
vinegar, and the second brand contains
12%
vinegar. The chef wants to make
270
milliliters of a dressing that is
8%
vinegar. How much of each brand should she use?
Click here to see answer by jorel555(1290)

Question 1034479: The indianapolis Children's Museum charges $12.50 for a one day youth admission and $17.50 for a one day adult admission. One Friday, the museum collected $1535 from a total of 110 youths and adults. How many admission of each type were sold?
Click here to see answer by josgarithmetic(39617)

Question 1034618: A pony is tethered to one corner of a 20 -foot by 40- foot barn in the middle of a large grassy field. The rope is 50 feet long. Over what area can the pony graze.(he can't go in the barn, and there isn't any grass in there..)
Click here to see answer by josgarithmetic(39617)

Question 1034619: Hi, the pharmacist gives me a 1.5 liter bottle of 20% solution and asks me to mix with water to make as much 12% solution as possible. How much water will I use?
Click here to see answer by ikleyn(52781)

Question 1003059: a beaker contains 0.5 liter of a solution. jordan uses 0.08 of the aolution for an experiment.how much of the solution does jordan use?
Click here to see answer by jorel555(1290)

Question 1002158: A snack food is made by mixing 2 lb of popcorn that costs $0.80 per pound with caramel that costs $2.90 per pound. How much caramel is needed to make a mixture that costs $2.20 per pound?
Click here to see answer by jorel555(1290)

Question 1034748: x+y=-1
xy=12
Click here to see answer by josgarithmetic(39617)

Question 1034777: Please help me solve this question
A cyclist is riding a bicycle with wheels 1metre in diameter. If the wheels make of 132 revolution each minutes. Find his speed in kilometers per hour.
Click here to see answer by josmiceli(19441)

Question 1035152: A chemist has a solution which is 60% pure acid and another solution which is 35% pure acid. How many grams of the 35% solution should he use to make 3000 grams of a solution which is 50% pure acid?
Click here to see answer by fractalier(6550)

Question 1035276: SAT verbal scores are normally distributed with a mean 433 and a standard deviation of 90. Use the Empirical Rule to determine what percent of scores lies between 433 and 523.

Click here to see answer by stanbon(75887)

Question 1035662: How many Kgs of a 45% alloy can be added to 62kgs of a 60% alloy will make a 50% alloy?
Click here to see answer by Alan3354(69443)

Question 1008630: Becky makes an antiseptic of alcohol and water. If she buys a solution that is 40% alcohol to make a 12.5% alcohol solution, how much water and alcohol solution should she mix to obtain 128 mL of her homemade antiseptic?
Click here to see answer by jorel555(1290)

Question 1035728: The sum of the digits of a two-digit number is 11. When the numbers are reversed, the new number is 20 less than twice the original. What is the original number?
Click here to see answer by Theo(13342)

Question 1035818: How many ounces of mixed nuts that contain 20% peanuts must Jose add to 11 ounces of mixed nuts that contain 70% peanuts to make a mixture with 42% peanuts
Click here to see answer by jorel555(1290)

Question 1035836: CKPenny is selling 50 coats. Each coat with a hood have 5 buttons and each coat without a hood have 10 buttons. If there are 400 buttons among all the coats, how many coats don't have hoods?
Click here to see answer by jorel555(1290)

Question 1035893: A chemist has 0.2 liters of an acid solution whose acid concentration is 65%. How many liters of pure water should be added to lower the concentration to 50%?

Click here to see answer by robertb(5830)

Question 1035980: How many gallons of a 70% antifreeze solution must be mixed with 90 gallons of 25% antifreeze to get a mixture that is 60% antifreeze? Use the six-step method. can you help me do this type proble?
Click here to see answer by josmiceli(19441)

Question 1035960: Luke mixed two fruit juices to create a fruit punch.
� Luke bought 5 gallons of orange juice for a total cost of $15.
� The cost per gallon of pineapple juice is 35% more than the cost per gallon of orange juice.
� Luke bought enough pineapple juice that, when he mixed it with the orange juice, the fruit punch had a value of $3.16 per gallon.

Approximately what percent of the fruit punch was pineapple juice?
Click here to see answer by jorel555(1290)

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