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Question 260337: There are four times as many trumpets as flute players in the orchestra. If there are 70 trumpet and flute players, how many flutes players are there
Click here to see answer by rfer(16322)

Question 260651: A garage owner wants to fill a 55-gallon drum with a 20% winter mixture of antifreeze for his customers. How many gallons of 100% antifreeze should he mix with some 10% antifreeze mixtures in order to fill the drum?
Click here to see answer by ptaylor(2198)

Question 260699: What quantity x of a 75% acid solution must be mixed with a 25% solution to produce 500 mL of a 40% solution?
Amount x=
Click here to see answer by drk(1908)

Question 260632: What quantity of a 50% acid solution must be mixed with a 25% solution to produce 600ml of a 40% solution? I am completely confused on what it is asking...
Click here to see answer by Fombitz(32388)

Question 260702: A merchant blends tea that sells for $3.45 a pound with tea that sells for $2.15 a pound to produce 80lb of a mixture that sells for $2.75 a pound
Then the mixture contains x lb of $3.45/lb tea and y lb of $2.15/lb tea

Click here to see answer by drk(1908)

Question 260701: What quantity x of a 75% acid solution must be mixed with a 25% solution to produce 500 mL of a 40% solution?
Amount x=
Click here to see answer by Fombitz(32388)

Question 260875: how much should be added to one gallon or pure antifreeze to make a solution that is 10% antifreeze?
Click here to see answer by Fombitz(32388)

Question 260908: How much water must be evaporated from 8 oz of 1% salt solution to form 2% water solution?
Click here to see answer by richwmiller(17219)

Question 261063: A chemistry student mixes together 12 ml of a 10% solution, 5 ml of a 80% chlorine solution and 20 ml of a 45 % solution. About what percent chlorine is the final solution?
Click here to see answer by checkley77(12844)

Question 261112: A chemist mixed a 15% glucose solution with a 35% glucose solution.This mixture produced 35 liters of a 19% glucose solution. How many liters of each solution did the chemist use in this mixture?

Click here to see answer by mananth(16946)

Question 261069: I need help setting up this problem.
A prescription requires a cough syrup to contain 2.5% codeine sulfate. A pharmacist filling an order for this prescription has only cough syrups with 1% codeine sulfate and 3% codeine sulfate,respectively. How many milliters of each of those syrups should be mixed to obtain 1,000 militers of 2.5% codeine sulfate cough syrup, to fill the prescription?
Click here to see answer by mananth(16946)

Question 261151: 1st question: A chemist needs a saline solution that is 20% sodium chloride but only has solutions that are 15% and 40% solution should she add to make a 20% solution?

Click here to see answer by richwmiller(17219)

Question 261212: How many 5% bags of cement need to be added to 3 bags of 10% cement to make 6%. I thought 12 but I'm not sure how to write the equation.
3 x 10% = 30% + 12 x 5% = 90% / 15 bags = 6
Thanks
Click here to see answer by ankor@dixie-net.com(22740)

Question 261429: I can't believe I don't remember this!
If $539,000 invested will generate $48,500 a year
how much will $914,000 generate if all else is constant?
Please show equation.
Vance
Click here to see answer by stanbon(75887)

Question 261472: a 5 percent salt solution is mixed with a 10% salt solution. How many mililiters of each solution are needed to obtain 400 mililiters of an 8% solution?
Click here to see answer by stanbon(75887)

Question 261533: a certain shade of paint is made by mixing 5 parts blue paint with 2 parts white paint. to get the correct shade, how many parts of white paint should be mixed with 8.5 parts blue paint?
Click here to see answer by richwmiller(17219)

Question 261862: a quantity of 13% acid solution is being diluted with some 3% acid solution.The final solution must be 8% acid and contain 90mL. How much of each solution must be added to accomplish this?
Click here to see answer by ptaylor(2198)

Question 261794: If 40L of an acid solution is 75% acid, how much pure acid is there in the mixture?
Here is what I have tried? 40(75)+100x=85(40+x)
3000+100x=3400+40x
400=60x
x=6.66666
Click here to see answer by ptaylor(2198)

Question 261860: Please help solve: a karat equals 1/24 part of gold in an alloy. (for example 9 karat gold in 9/24 gold) How many grams of a 9 karat gold must be mixed with 18 karat gold to get 200 g of 14 karat gold?
Click here to see answer by richwmiller(17219)

Question 261855: One grade of oil has 0.50% of an additive and a higher grade has 0.75% of the additive. How many liters of each must be used to have 1000 L of a mixture with 0.65% of the aadditive? Please help solve. Thank You!
Click here to see answer by checkley77(12844)

Question 261856: How much water must be added to 20.0 mL of a 60.0% slaine solution in order to make a 45.0% saline solution. Please help solve. Thank You!
Click here to see answer by checkley77(12844)

Question 261911: Perry wants to make a 80% alcohol solution. He has already poured 8 gallons of a 85% alcohol solution into a beaker. How many gallons of a 70% alcohol solution must be added to this to create the desired mix?
Click here to see answer by checkley77(12844)

Question 261951: how many pounds of candy worth $4.50/lb must be mixed with 100 pounds worth $3.50/lb to produce a mixture to sell for $4.00/lb
Click here to see answer by checkley77(12844)

Question 261960: you have $165 in ones, fives, and tens. there are three times as many $1 bills as $10 bills, and four times as many $5 bills than $10 bills. how many bills of each kind do you have?
Click here to see answer by dabanfield(803)

Question 261969: A candy store sells boxes of candy containing caramels and cremes. Each box sells for $12.50 and holds 30 pieces of candy (all pieces are the same size). If the caramels cost $0.25 to produce and the cremes cost $0.45 to produce, how many of each should be in a box to make a profit of $3?
Click here to see answer by drk(1908)

Question 262016: how do you write 40 and 45 in word form

Click here to see answer by Edwin McCravy(20055)

Question 262142: Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 40 miles per hour and train B is traveling at 60 miles per hour. Train A passes a station at 5:25 A.M. If train B passes the same station at 5:37 A.M, at what time will train B catch up to train A?
Click here to see answer by mananth(16946)

Question 262056: How many liters of pure antifreeze must be added to 30 liters of a 60% solutions to obtain a 75% solution? I have the problem down but forgot how to get the second number where you go to the second box and subtract a question mark. HELP ME!
Click here to see answer by ankor@dixie-net.com(22740)

Question 208658: If tracey bought coffee at $3.00 a cup using a 30-day month,find the total amount
Click here to see answer by lil-man(10)

Question 208659: If max bought coffee at $4.00 a cup on a average using a 30-day month,find the total amount use formulae m=4(30)
Click here to see answer by lil-man(10)

Question 208661: If tracey and max make their own specialty blend of coffee.they estimate that it costs about $1.00 for every 2 cups of coffee. Determine how much they are saving by making their own coffee
Click here to see answer by lil-man(10)

Question 262263: How much water must be added to 3 gallons of a 4% insecticide solution to reduce the concentration to 3%?
Click here to see answer by nerdybill(7384)

Question 262426: Ten ounces of fruit drink is 90% juice. How many ounces of water must be added to dilute the micture to 50% fruite juice?
Click here to see answer by checkley77(12844)

Question 262605: a 25% solution must be mixed with a 50% solution in order to obtain 5 liters of a 30% solution.how much of each is needed?
Click here to see answer by dabanfield(803)

Question 262614: A coin purse contains 46 coins in dimes and quarters. The coins have a value of $7.00 or 700 cents. Determine the number of dimes and quarters in the coin purse.
I figured out the answer to be 30 dimes and 16 quarters by guess & checking, but I need to know how to set up the proper equation to get this answer!
Click here to see answer by richwmiller(17219)

Question 262669: A Chemist has two solutions of alcohol. one has a 24% concentration and the other has 40% concentration. How many liters of each solution must be mixed to obtain 120 liters of a 30% solution?
Click here to see answer by mananth(16946)

Question 262668: Solve each part of this problem using a Proportion.
Use the variable x to represent the unknown number of cups of sugar. A recipe requires 1 1/3 cups of sugar to make 8 giant muffins. How many cups of sugar are needed for 36 giant muffins?
Click here to see answer by Theo(13342)

Question 262854: the sum of 1/3 and three times a number is equal to 4/5 subtracted from four times the number find the number. is it 7/15?
Click here to see answer by dabanfield(803)

Question 262870: The owner of a store wants to make a 30-pound mixture of two candies to sell for $3 per pound. If one candy sells for $2.95 per pound and the other for $3.10 per pound, how many pounds of each should be used?
Click here to see answer by palanisamy(496)

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