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Question 770732: A family has two cars. The first car has a fuel efficiency of 25 miles per gallon of gas and the second has a fuel efficiency of 40 miles per gallon of gas. During one particular week, the two cars went a combined total of 2100 miles, for a total gas consumption of 60 gallons. How many gallons were consumed by each of the two cars that week?
Click here to see answer by oscargut(2103)

Question 770735: How much of 40% alcohol and how much of 80% solution should be mixed to give 40 gallons of 50% solution?
Click here to see answer by josmiceli(19441)

Question 770910: A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is 65% salt and Solution B is 85% salt. She wants to obtain 120 ounces of a mixture that is 80% salt. How many ounces of each solution should she use?
Click here to see answer by josgarithmetic(39617)

Question 771050: I have a 3000 gallon glycol heating system. I need to achieve a 50% mixture of glycol and water. Right now my 3000 gallons is around a 30% mixture, I want to buy 100% glycol and mix it to bring the 3000 gallons back up to a 50% mixture. Im trying to find out how many gallons i need to do this. I know it will raise the 3000 gallons as well which means I wont need the entire 3000 of the 30%. I couldnt begin to try and wrap my head around this. Anything you could do to help would be greatly appreciated.
Click here to see answer by Alan3354(69443)

Question 771162: What quantity of 60 per cent acid solution must be mixed with a 30 solution to produce 810 mL of a 50 per cent solution?
Click here to see answer by josgarithmetic(39617)

Question 771322: (10^0)(-5)^-3
Click here to see answer by jim_thompson5910(35256)

Question 771367: -6 (x-2)+4 (3-6x)=-36
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Question 771326: hey, this makes two solutions.one is 24 percent acid the rest is water and the other is 41 percent acid is about how much of each solution does she need to do 50 gallons of a solution that is 31 percent 250 gallons of the solution that is 31 percent acid

Click here to see answer by josgarithmetic(39617)

Question 771437: A radiator contains 7 liters of a 25% antifreeze solution. How much should be drained and replaced with pure antifreeze to produce a 55% antifreeze solution? (Round your answer to two decimal places.)

Click here to see answer by josgarithmetic(39617)

Question 771615: How much pure acid must be added to 12 ounces of a 40 percent acid solution in order to produce a 60 percent acid solution?
Click here to see answer by josgarithmetic(39617)

Question 771698: Im having a hard time learning word problems especially mixtures, I got a low grade of 81% in my pre lim which is not enough if I would apply for a scholarship, please do help me, I am humbly asking you , is there anyway for me to really be able to understand it completely, and would I be able to be good in word problems. help guys pls. and thank u =)
Click here to see answer by josmiceli(19441)

Question 771770: A cement mixture calls for 160 pounds of cement for 4 gallons of water. What is the ratio of cement to water?
Click here to see answer by rfer(16322)

Question 772491: Jack has 2 quarts of 30% acid solution and 3 pints of 20% solution. If he mixes, what will be the concentration of resulting.
Click here to see answer by josgarithmetic(39617)

Question 772481: how many bottles of medicine, each with a volume of 40ml, can be filled from 4 liters of medicine, if 80ml is split in the process
Click here to see answer by rfer(16322)

Question 772605: please help me with these math problems
6z / 5x = 30
10x+20y=40
4x+7y=28

Click here to see answer by Alan3354(69443)

Question 772610: please help me with these problems
4x+7y=28
10x+20y=40
6z / 5x = 30

Click here to see answer by Alan3354(69443)

Question 321481: How many ounces of an alloy containing 30% gold on the world market must be added to 10 ounces of an alloy containing 5% to produce an alloy containing 20% gold?
Click here to see answer by modi.kk91(20)

Question 321528: A mixture of 14% disinfectant solution is to be made from 10% and 20% disinfected solutions. How much of each solution should be used if 20 gallons of 14% solutions are needed?
Click here to see answer by modi.kk91(20)

Question 321728: A 280 mL solution is 20% salt. How much water should be added to make the solution 14% salt?
Click here to see answer by modi.kk91(20)

Question 322144: A scientist has two solutions,which she has labeled Solution A and B.
Each contains salt. She knows that Solution A is 65% SALT and Solution B is 90%
SALT. She wants to obtain 120 ounces of a mixture that is 85% salt.
How many ounces of EACH solution should she use?
Solution A: _ ounces
Solution B:_ ounces
Thanks.
Click here to see answer by modi.kk91(20)

Question 772663: a man purchased sugar worth Rs 400.He sold 3/4 th at the loss of 10% and the remainder at gain of 10%. on the whole he how much % get loss or profit?

Click here to see answer by josgarithmetic(39617)

Question 772704: 21 kg of Brand M Cinnamon was made by combining 9 kg of Indonesian cinnamon which costs $16/kg with 12 kg of Thai cinnamon which costs $9/kg. Find the cost per kg of the mixture.
Click here to see answer by josgarithmetic(39617)

Question 323455: A 40% dye solution is to be mixed with a dye solution to get 120 liters of a 50% solution. How many liters of the 40% and 70% solutions will be needed?
Click here to see answer by modi.kk91(20)

Question 323585: A chemist has two different solutions. One has 50% alcohol and 50% water and the other has 75% alcohol and 25% water. How many liters of each should be mixed to obtain 8 liters of solution comprised of 60% alcohol and 40% water?
Click here to see answer by modi.kk91(20)

Question 323496: how many ounces of 30% hydrochloric acid solution and 80% hydrochloric acid solution must be mixed to get 10 ounces of 50% hydrochloric solution?
Click here to see answer by modi.kk91(20)

Question 324285: A contractor mixes concrete from bags of pre-mix for small jobs. How many bags with 10% cement should he mix with 8 bags of 12.5% cement to produce a mix containing 11% cement.
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Question 324683: how many mL of each of 45% solution and a 15% solution should be mixed in order to obtain 25 mL of a 30% solution?
Click here to see answer by modi.kk91(20)

Question 324803: A chemist has 35% NaCl solution and 50% NaCl solution. How many liters of each should he mix to get 10L of NaCl solution with 40% base concentration?
Click here to see answer by modi.kk91(20)

Question 324878: Solution A is 25% acid and solution B is 40% acid. How much of each is needed to make 60 liters of a solution with 30% acid?
Click here to see answer by modi.kk91(20)

Question 310597: How many liters of a 10% alcohol solution must be mixed with 50 liters of a 80% solution
to get a 20% solution?
Click here to see answer by modi.kk91(20)

Question 310828: How much water must be added to 300ML of a 60% acid solution in order to dilute it to a solution of 45% acids?
Click here to see answer by modi.kk91(20)

Question 772750: 14feet 6 inches subtract 4feet
Click here to see answer by Cromlix(4381)

Question 772776: You have 30 cl of acid solution that is 10% in strenght, how much water would you need to dilute the solution to 7% in strenght.
I have fought with this task for hours now and I am at breaking point, can someone show me how it is done step by step.

Click here to see answer by Edwin McCravy(20056)

Question 282968: how much water should be added to a radiator that contains 10 gallons of an 80% solution antifreeze solution to dilute it to a 50% antifreeze solution?
Click here to see answer by modi.kk91(20)

Question 662563: How much water must be added to a 20 quarts of a 12% alcohol solution to dilute it to a 9% solution?
Click here to see answer by modi.kk91(20)

Question 772718: How many quarts of pure alcohol must be added to 10 quarts of 10% alcohol solution to obtain a mixture which is 25% alcohol?

Click here to see answer by modi.kk91(20)

Question 772180: how many quarts of pure antifreeze must be added to 9 quarts of a 20% antifreeze solution to obtain a 30% antifreeze solution?
Click here to see answer by modi.kk91(20)

Question 771985: How many ml of water should be mixed with 1200ml of a 65% solution to make a 45% solution?
Click here to see answer by modi.kk91(20)

Question 772009: What quantity of 60 per cent acid solution must be mixed with a 30 per cent solution to produce 540 mL of a 50 per cent solution
Click here to see answer by modi.kk91(20)

Question 773160: Where does -3/4 go on a number line
Click here to see answer by jim_thompson5910(35256)

Question 773237: A chemist mixed 130 ml of an 25% saline solution with 60 ml of a 6% saline solution. Find the percent concentration of the resulting mixture
Click here to see answer by josgarithmetic(39617)

Question 772721: (x-a)(x-b)...(x-z)=

Click here to see answer by tommyt3rd(5050)

Question 773348: 21 gram mixture of water and potassium is .8% potassium. How much water must be evaporated so that the mixture is 1.4% potassium?
Click here to see answer by Cromlix(4381)

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