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Question 898219: How many liters of water must be added to 8 liters of a 40% acid solution to obtain a 10% acid solution?
Click here to see answer by josgarithmetic(39617)

Question 898224: For the following exercise, translate into a variable expression. Use x for your variable.
a number decreased by the difference between eighty and the number
Click here to see answer by ewatrrr(24785)

Question 898222: For the following exercise, translate into a variable expression. Use x for your variable.
a number decreased by the difference between two times the number and seventeen
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Question 898249: How much 90 percent vinegar do you have to add to a gallon of 5 percent vinegar to get 20 percent vinegar?
Click here to see answer by stanbon(75887)

Question 898261: how much water should be added to 12 mL of 7% alcohol to reduce concentration to 6%?
Click here to see answer by lwsshak3(11628)

Question 898282: How many liters of a 4% solution of salt should be added to a 24% solution in order to obtain 1100 liters of a 19% solution?
Click here to see answer by richwmiller(17219)

Question 885491: James needs to mix a 10% saline solution with a 50% saline solution to create 200 mL of a 18% solution. How many mL of each solution must James use?
Click here to see answer by richwmiller(17219)

Question 898309: I have 6qts of juice which is 30% and I need to make it to be 40%. I am using 100% juice to get it there How much do I need?

Click here to see answer by josmiceli(19441)

Question 897072: The density and strength of concrete are determined by the ratio of cement and aggregate. Suppose that a contractor has 480ft^3 of a dry concrete mixture that is 70% sand by volume. How much pure sand must be added to form a new mixture that is 75% sand by volume?
Click here to see answer by josgarithmetic(39617)

Question 897033: Mega Movies hosted a film premiere on Friday night. They charged $8 for adults and $6 for children. 151 adults and children attended. $1,156 was made in ticket sales . How many children and adults attended?
Click here to see answer by richwmiller(17219)

Question 898491: For an experiment, a student requires 200 milliliters of a solution that is 8% NaCl (sodium chloride). The storeroom has only solutions that are 15% NaCl and 5% NaCl. How many milliliters of each available solution should be mixed to get 200 milliliters of 8% NaCl?
Click here to see answer by Alan3354(69443)

Question 898608: if a man can do a piece of work in 15 days what part of work does he finish in 1 day? in 3 days? in x days? in 15 days?

Click here to see answer by josgarithmetic(39617)

Question 898670: A 2-gallon container of window cleaner cost $16.40.What is the price per quart?
Click here to see answer by ewatrrr(24785)

Question 898675: 8 fl.oz. of an alcohol solution was mixed with 2 fl. oz. of pure water to make a 40% alcohol solution. Find the percent concentration of the first solution
Click here to see answer by ewatrrr(24785)

Question 898613: There are 950 students at St. Xavier�s School. Every year, the school
organizes a cultural program on Christmas. During this function, all students
sit in 25 rows. How many seats do they need for students in each row?

Click here to see answer by ewatrrr(24785)

Question 898776: Peanuts worth $2.20 per pound are mixed with chocolate worth $4.40 per pound to make 20 pounds of a trail mix worth $3.63 per pound. How many pounds of peanuts were used?
I know the answer is 7 lbs, but I can't set it up correctly to get the right answer. i figured this but I know it's not correct
20(4.40) +(2.20)x=3.63(20 + x).
Click here to see answer by ewatrrr(24785)

Question 898757: a landscaping company needs 220 gallons of 23% fertilizer to fertilize the shrubs in an office park they have in stock a 30% fertilizer and 20% fertilizer how much of each type should they mix together?
Click here to see answer by richwmiller(17219)

Question 898841: How many liters of a 25% antifreeze solution must be mixed with 4 liters of a 60% antifreeze solution to make a mixture that is 45% antifreeze?
Click here to see answer by richwmiller(17219)

Question 898932: A goldsmith mixed 10 g of a 40% gold alloy with 60 g of a 15% gold alloy. What is the percent concentration of the resulting alloy?
Click here to see answer by josgarithmetic(39617)

Question 819020: A chemist has 100 liters of 30% sodium chloride solution. She intends to drain a certain number of liters and replace with a more concentrated solution.
a) How much of this solution should she drain and replace with 80% sodium chloride if she wants a 55% sodium chloride solution?
Click here to see answer by richwmiller(17219)

Question 899019: A chemist wants to create a solution that is 24% acid. How many liters of a 40% acid solution must be added to 50 liters of an 18%
acid solution to obtain this 24% acid mixture?

Click here to see answer by richwmiller(17219)

Question 898843: 75 mL of a 10% acid solution are mixed with 30 mL of a 2.5% acid solution. how much acid is in the mixture
Click here to see answer by richwmiller(17219)

Question 899045: 7 kg of soybean oil which costs $4/kg were combined with 14 kg of canola oil which costs $1/kg. find the cost per kg of the mixture
Click here to see answer by ewatrrr(24785)

Question 899055: How much water must be evaporated from 15 qt of a 65% antifreeze solution to produce a 75% solution?
I dont know how i would go on to breaking this problem down
Click here to see answer by ewatrrr(24785)

Question 899081: how many ounces of a 45% alcohol solution must be mixed with 10 ounces of a 50% alcohol solution to make a 47% alcohol solution
Click here to see answer by ewatrrr(24785)

Question 899096: Following an investigation into finance fraud, a daycare center enrollment decreased by 40% to 55 What was the daycare center's enrollment before the investigation?
Click here to see answer by ewatrrr(24785)

Question 899219: How much pure acid is in 780 milliters of a 12 percent solution

Click here to see answer by josgarithmetic(39617)

Question 899249: how would i set this problem up? a chemist has a 25% hydrochloric acid solution and a 50% hydrochloric acid solution. how many liters of each should she mix to get 10 liters of a hydrochloric acid solution with 40% acid concentration?
Click here to see answer by richwmiller(17219)

Question 899252: how many gal. of a 40% sugar solution must be mixed with 8 gal. of a 30% sugar solution to make a 32% solution

Click here to see answer by richwmiller(17219)

Question 899333: marcia kleinz needs a 20% muriatic acid solution to clean the rust on her pool deck. how many ounces of a 32% muriatic acid solution should marcia mix with 32 ounces of a 17% muriatic acid solution to get a solution that is 20% muriatic acid?
Click here to see answer by josmiceli(19441)

Question 899324: Vietnamese cinnamon costs $18 for a pound, and Indonesian cinnamon costs $30 for a pound. Penzey's wants to create a 12 lb mixture of cinnamon that costs $25/lb. How much of each type should they mix together?
Click here to see answer by josmiceli(19441)

Question 899440: A regulation requires that in order for soda to be termed as "naturally flavored", the drink must contain at least 10% fruit juice. how much pure fruit juice must a manufacturer add to 900 gallons of 5% orange soda to conform to the regulation?
Click here to see answer by stanbon(75887)

Question 899439: A regulation requires that in order for soda to be termed as "naturally flavored", the drink must contain at least 10% fruit juice. how much pure fruit juice must a manufacturer add to 900 gallons of 5% orange soda to conform to the regulation?
Click here to see answer by ewatrrr(24785)

Question 899434: a rectangular room garden is 25ft wide. if its area is 1125 ft^2 , what is the length of the garden?
Click here to see answer by ewatrrr(24785)

Question 899408: a chemist needs 22 liters of a 10% acid solution. how much of a 5% solution should be mixed with a 31% solution to get that?
Click here to see answer by ewatrrr(24785)

Question 899512: how much pure acid should be mixed with 2 gallons of a 40% acid solution in order to get a 70% acid solution?
Click here to see answer by swincher4391(1107)

Question 899506: How many liters of pure water should be mixed with a 9-L solution of 90% acid to produce a mixture that is 50% water?
Click here to see answer by richwmiller(17219)

Question 899608: How many liters of pure antifreeze must be added to a 5 liters of a 10% antifreeze solution to obtain 20% antifreeze solution ?
Click here to see answer by richwmiller(17219)

Question 899628: Hi,
I'm having trouble with the following question:
How many pounds of peanuts worth 70 cents a pound must be mixed with 30 pounds of walnuts worth 90 cents a pound, to produce a mixture which can be sold at 85 cents a pound?
Thanks in advance!
Click here to see answer by ewatrrr(24785)

Question 899293: How many liters of a 5% solution of salt should be added to a 19% solution in order to obtain 616 liters of a 15% solution?
Click here to see answer by richwmiller(17219)

Question 899634: How many pounds of chocolate chip cookies worth $1.80 a pound must be mixed with 15 pounds of butter cookies worth $1.10 a pound to create a mixture which can be sold at $1.50 a pound?
Click here to see answer by ewatrrr(24785)

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