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Question 342698: how do i set up the equation for "the amount of acid in x liters of a 20% acid solution"
Click here to see answer by Fombitz(32388)

Question 342698: how do i set up the equation for "the amount of acid in x liters of a 20% acid solution"
Click here to see answer by vleith(2983)

Question 342739: How many liters of a 20% alcohol solution should Maria
mix with 50 liters of a 60% alcohol solution to obtain a
30% solution?
Click here to see answer by stanbon(75887)

Question 342922: How many quarts of water need to be added to 30 quarts of 40% alcohol to obtain a 20% alcohol solution?
Click here to see answer by Fombitz(32388)

Question 343228: one alloy contains 20% silver and another contains 8% silver. How many grams of each should be mixed to give 120 g of an alloy which is 15% silver?
Click here to see answer by stanbon(75887)

Question 343264: A gallon of a 25% saline solution is to be diluted by adding water to it. Let x= number of gallons of distilled water added to the 25% solution. Write an algebraic expression for the percent saline solution obtained by adding the distilled water to the original 25% solution.
I thought it may be .25/x but I'm not sure??? thanks
Click here to see answer by scott8148(6628)

Question 343306: how many liters of 60% acid solution must be mixed with a 75% acid solution to get 20 liters of a 72% solution?
Click here to see answer by Fombitz(32388)

Question 343327: How many gallons of a 2% salt solution must be mixed with 20 gallons of a 7% solution to obtain a 4% solution?

Click here to see answer by Fombitz(32388)

Question 343435: A pound of tin is worth $1 more than a pound of copper. Four pounds of tin are mixed with 6 pounds of copper to make a bronze that sells for $3.65 per pound. How much is a pound of tin worth?
Click here to see answer by solver91311(24713)

Question 343456: how many quarts of pure antifreeze must be added to 7 quarts of a 10% antifreeze solution to obtain a 30% antifreeze solution
Click here to see answer by scott8148(6628)

Question 343472: Equal amounts are invested at 4%, 7%, and 9% annual interest. If the three investments yield a total of $720 annual interest, find the total investment.
Please show all work, Thanks much
Click here to see answer by Fombitz(32388)

Question 343470: How many gallons of cream that is 26% butterfat must be mixed with milk that is 2% butterfat to get 24 gallons of milk containing 4% butterfat?

Click here to see answer by Fombitz(32388)

Question 343678: How much developer must be added to 9 pints of 15% developer to produce a mixture that is 50% developer?
Click here to see answer by scott8148(6628)

Question 343789: i really need youre help with this problem
how many ounces of a 50% acetic solution should a photographer add to 32 ounces of a 5% acetic acid solution to obtain a 10% acetic acid solution?

Click here to see answer by stanbon(75887)

Question 343839: How many quarts of water must be added to 5 quarts of an 80% antifreeze solution to make a 50% antifreeze solution?
Click here to see answer by Fombitz(32388)

Question 343845: A chemist mixed 100 mL of an 8% saline solution with 60 mL of a 5% saline solution. Find the percent concentration of the resulting mixture.
Click here to see answer by Fombitz(32388)

Question 343843: How many grams of pure acid must be added to 60 grams of an 8% acid solution to make a 20% acid solution?
Click here to see answer by Fombitz(32388)

Question 343870: two acid solution are available to a chemist. one is a 10% nitric acid solution and the other is a 40% nitric acid solution.how much of each type of solution should be mixed together to for a 12 litters of a 20% nitric solution
Click here to see answer by Fombitz(32388)

Question 343842: How much water must be evaporated from 10 gallons of a 12% sugar solution in order to obtain a 15% sugar solution?
Click here to see answer by nerdybill(7384)

Question 344110: A chemist needs 110 milliters of a 22% solutions but only has 10% and 54% solutions available. Find how many milliters of each solution that should be mixed to get the desired solution?
I don't know how to set this up
Click here to see answer by checkley77(12844)

Question 344176: A 40% salt solution is to be mixed with a 60% salt solution to obtain 100 gallons of a 45% salt solution. How much of each solution must be used?
Click here to see answer by josmiceli(19441)

Question 344338: One solution contains 10% alcohol while another contains 30% alcohol. How many liters of each should be mixed to give 10 L of a solution 25% alcohol?
Thanks!
Click here to see answer by Fombitz(32388)

Question 344406: We have 171 kg rice custing 7 rs/kg.we have rice at 11 rs/kg and 2 rs/kg .then after mixing 11 rs/kg and 2 rs/kg rice. What is quantity of 11 rs/kg rice ..
Click here to see answer by josmiceli(19441)

Question 344410: Bronze which costs $9.10/kg is made by combining copper which costs $8.90/kg with tin which costs $9.50/kg. Find the number of kg of copper and tin required to make 15.3 kg of bronze.
Click here to see answer by Fombitz(32388)

Question 344661: If you have one gallon of pure antifreeze, how much water would you add to make a mixture of 70 percent water and 30 percent antifreeze?
Click here to see answer by Jk22(389)

Question 344830: How many gallons of water is needed to add to a 1 gallon 100% concentration of anti freeze to form a mixture of 30%?
Click here to see answer by ewatrrr(24785)

Question 344866: how many grams of 4% salt solution must be mixed with 50g of a 9% salt solution to make a 6% salt solution?
Click here to see answer by stanbon(75887)

Question 344977: If 40 Liters of an acid solution is 75% acid, how much pure acid is there in the mixture?
Click here to see answer by Fombitz(32388)

Question 345044: if 2 pipes can fill a pool in 18 hours when both pipes are open and one of the pipes can fill the pool in 30 hours, how long would it take the other pipe to fill the pool alone
Click here to see answer by ankor@dixie-net.com(22740)

Question 345268: how much of a 32% solution must be mixed with 48ml of a 40% solution to obtain a 35% solution? ______mL
Click here to see answer by checkley77(12844)

Question 345292: a chemist has two solutions of HCL. One has a 40% concentration and the other one has a 25% concentration. How many liters of each solution must be mixed to obtain 136 Liters of a 33% solution?
Click here to see answer by Fombitz(32388)

Question 345357: Two people are sitting 15 ft apart on a seesaw. One person wighs 120 lbs. The second person weighs 180 lbs. How far from the 120 lb person should the fulcrum be placed so that the seesaw balances?
Click here to see answer by mananth(16946)

Question 345410: How much of an alloy that is 20% copper should be mixed with 200 ounces of an alloy that is 50% copper in order to get an alloy that is 30% copper?
Click here to see answer by Fombitz(32388)

Question 345424: In a chemistry class,8 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed? How to solve this problem?
Click here to see answer by Fombitz(32388)

Question 345429: You have 3 mL of 0.9% salt solution and you add 2 mL of pure water to it. What is the percentage of the salt solution now?
Click here to see answer by josmiceli(19441)

Question 345459: A 36-foot pipe is divided into three pieces. One piece is twice as long the shortest piece, and the third piece is 1 foot longer than four times the shortest piece. Find the Length of the shortest piece.
Click here to see answer by josmiceli(19441)

Question 345458: How many liters of pure acid must be mixed with 20 liters of a 15% acid solution to get a 20% mixture?
Click here to see answer by josmiceli(19441)

Question 345541: How many gallons of a 2% salt solution must be mixed with 30 gallons of a 7% solution to obtain a 5% solution?

0.02x + 30(0.07) = x-30(0.05)

Click here to see answer by Fombitz(32388)

Question 345581: A 12-pound puppy is gaining weight at a rate of 2/3 lb per week. How much more time will it take for the puppys weight to exceed 21 2/3lb?
Click here to see answer by ewatrrr(24785)

Question 345140: I'm taking on online class and I can't figure this out. please help me.
how much of an alloy that is 30% copper should be mixed with 500 ounces of an alloy that is 70% copper in order to get an alloy that is 40% copper?
Click here to see answer by ankor@dixie-net.com(22740)

Question 345597: Hom many liters of 20% salt solution must be added to 68 liters of 61% salt solution to get a 37% salt solution?
Click here to see answer by Fombitz(32388)

Question 345335: How do you solve the following word problem?
You need to mix 6% peroxide solution with 9% peroxide solution to obtain 36 ounces of an 8% peroxide solution. How many ounces of each solution is needed?
Click here to see answer by ankor@dixie-net.com(22740)

Question 345565: A pharmacist needs 20% boric acid solution. How much 60% boric acid solution must be added to 7.5 liters of an 8% boric acid solution to get the desired strength?
Click here to see answer by Fombitz(32388)

Question 345627: How much water should be added to 30 liters of 40% acid solution to reduce to 30% solution?
Click here to see answer by ewatrrr(24785)

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