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Question 782123: How much copper and how much magnesium should be added to 200lbs of an alloy containing 20% copper and 40% magnesium to produce an alloy containing 24% copper and 50% magnesium?
Click here to see answer by stanbon(75887)

Question 782138: Md lab needs to make 500 gallons of 34% acid solution. The only solutions avalible are 25% solution and a 50% solution. Tow many gallons of each solution should be mixed to make the 34% solution
Click here to see answer by mananth(16946)

Question 782193: How much water should be added to 10ml of 7% alcohol solution to reduce concentration to 5%?
Click here to see answer by Alan3354(69443)

Question 782217: how many liters of 35% alcohol and 60% alcohol must be mixed together to make 40 liters of a solution that is 53% alcohol?
Click here to see answer by stanbon(75887)

Question 782257: How many liters of a 9% solution of salt should be added to a 19% solution in order to obtain 300 liters of a 15% solution?
Click here to see answer by algebrahouse.com(1659)

Question 781967: An automobile engine can run on a mixture of gasoline and a substitute fuel. If gas costs $3.45 per gallon and the substitute fuel costs $2 per gallon, what percent of a mixture must be substitute fuel to bring the cost down to $2.58 per gallon?

Click here to see answer by ankor@dixie-net.com(22740)

Question 782314: British sterling silver is a copper-silver alloy that is 7.5% copper by weight. How many grams of pure copper and how many grams of British sterling silver should be used to prepare 190 grams of a copper-silver alloy that is 18% copper by weight?
Click here to see answer by ankor@dixie-net.com(22740)

Question 782456: Balsamic vinegar contains 4% acetic acid, so a 32-oz bottle of balsamic vinegar contains how many ounces of acetic acid?
Click here to see answer by josgarithmetic(39618)

Question 782457: How much water has to be evaporated from 96 liters of a 5% acid solution in order to make it into a 6% solution?
Click here to see answer by josgarithmetic(39618)

Question 782460: How many liters of water should be added to a 5 liter of a 60% salt solution to produce a solution that is no less than 30% salt and no more than 40% salt?
Click here to see answer by josgarithmetic(39618)

Question 782462: I have to use elimination or substitution to solve this. I am able to do that if I can get it into two linear equations in two variables.
The problem is: A chemist has 15% and 40% solutions of acid available. How may liters of each solution should be mixed to obtain 5 liters of a 20% acid solution?
Click here to see answer by josgarithmetic(39618)

Question 782484: How much of an alloy that is 10% copper should be mixed with 600 oz of an alloy that is 60% copper in order to get an alloy that is 20% cooper
Click here to see answer by mananth(16946)

Question 782602: how many liters of water should be added to 5L of a 60% salt solution to produce a solution that is no less than 30% salt and no more than 40% salt?
I set it up as
.30 <= (5)(.60)+(0)(x) <= .40
Click here to see answer by Alan3354(69443)

Question 782624: how much 2% acid must be mixed with 10% acid to obtain 4000 ml of 4% acid
Click here to see answer by josmiceli(19441)

Question 782609: how many liters of water should be added to 5L of a 60% salt solution to produce a solution that is no less than 30% salt and no more than 40% salt?
Click here to see answer by josgarithmetic(39618)

Question 782799: if a piece of aluminum foil weighs 4.08 grams and the length of the piece of foil is 10cm and the width of the piece of foil is 93.5cm what is the thickness of the foil.
Click here to see answer by solver91311(24713)

Question 782912: I want to find out how much water needs to be added to one gallon of a 75% phosphoric acid solution to create a 6% acid solution.
Click here to see answer by josgarithmetic(39618)

Question 783105: how many liters of a 10% alcohol solution must be mixed with how many liters of a 50% solution to get 20 liters of a 40% solution?
Click here to see answer by mananth(16946)

Question 783140: a chemist wants to make 150 ml. of a 30% acid solution by mixing a 26% acid solution with a 36% acid solution. how many ml. of each solution should the chemist use?
Click here to see answer by mananth(16946)

Question 783163: a tank holds 80 liters of a chemical solution. Currently, the solution has a strength of 30%. how much of this should be drained, and replaced with a 70% solution, to get a final strength of 40%?
Click here to see answer by josmiceli(19441)

Question 783215: Find the cost per ounce of a mixture of 200 oz of a cologne that costs $7.50 per ounce and 500 oz of a cologne that cost $4.00 per ounce.
Click here to see answer by josgarithmetic(39618)

Question 783242: if a container currently has 30% solutions and you want it to be 50% solution. how much should you replace with 100% soulution?
Click here to see answer by josgarithmetic(39618)

Question 783343: a man mixes candy worth 70 centavos per pound with a candy worth 40 centavos per pound to make 42 pounds of assortment worth 50 centavos per pouns. how much of each kind should be used ?
Click here to see answer by stanbon(75887)

Question 783376: How many liters of a 1% solution must be added to 12 liters of a 4%solution to obtain a 2% solution?
Click here to see answer by josmiceli(19441)

Question 783435: how many grams of powder would it take to make 18 ounces?
Click here to see answer by Cromlix(4381)

Question 783488: A chemist needs to dilute a 15% acid solution so that it contains 10% acid. How much pure water should be added to 200ml of a 15% acid solution in order to reach her goal?
Click here to see answer by solver91311(24713)

Question 783515: One solution contains 50% alcohol and another solution contains 80% alcohol. How many liters of each solution should be mixed to make 13.5 liters of a 70% alcohol solution?
Click here to see answer by edjones(8007)

Question 783513: How many liters of a 65% acid solution must be added to 12 liters of a 20% acid solution to produce a 38% acid solution?

Click here to see answer by edjones(8007)

Question 783493: Dr. Jones needs to mix a 25% glucose solution with a 5% glucose solution to make one liter of a 10% glucose solution. How many liters of 25% and 5% glucose solutions must be mixed?

I know its the P1V1+ P2V2= P3V3 i guess i am just having trouble setting up the specific problem. If you could help me with that I would greatly appreciate it.

Click here to see answer by ankor@dixie-net.com(22740)

Question 783751: how many liters of 25 percent acid solution must be added to 80 liters of 40 percent solution to obtain a solution that is 30 percent acid?
Click here to see answer by stanbon(75887)

Question 783786: 3 L of an acid solution was mixed with 7 L of a 20 % acid solution to make a 41 % acid solution . Find the percent concentration of the first solution.
Click here to see answer by josgarithmetic(39618)

Question 783761: Marcela mixed together 8L of Brand A fruit drink and 6L of Brand B fruit drink, which contains 40% fruit juice. Find the percent of fruit juice in Brand A if the mixture contained 20% fruit juice
Click here to see answer by josgarithmetic(39618)

Question 783856: A family has two cars. During one particular week, the first car consumed 30 gallons of gas and the second consumed 35 gallons of gas. The two cars drove a combined total of 1450 miles, and the sum of their fuel efficiencies was 45 miles per gallon. What were the fuel efficiencies of each of the cars that week?
I am having trouble setting this up. Could you please help me?
Thank you.
Click here to see answer by MathTherapy(10552)

Question 784163: how many quarts of pure antifreeze must be added to 2 quarts of 20% antifreeze solution to obtain a 40% antifreeze solution?
Click here to see answer by lwsshak3(11628)

Question 784414: Taisha and Shakina are each making punch. Taisha's recipe calls for 5 parts pineapple juice to 3 parts orange sherbet. Shakina's recipe calls for 8 parts pineapple juice to 6 parts orange sherbet. Which recipe will have a stronger orange flavor?
Click here to see answer by josgarithmetic(39618)

Question 784482: How many liters of a 4 \% solution of salt should be added to a 24 \% solution in order to obtain 1100 liters of a 9 \% solution?
Click here to see answer by harpazo(655)

Question 784522: trail mix has 10 grams of raisins and 6 grams of sunflower seeds, how many sunflower seeds is in 40 grams of trail mix? Need to make a ratio chart as well as a tape chart.
I have tried for 3 hours but I can't get it to work. I tried doing half my chart
5 10 15 20 25 30 35 raisins
3 6 9 12 15 18 21 sunflower seeds
8 16 24 32 40 48 56
to me the answer should be 15. but I don't know if this is right and then how to get it in a tape form

Click here to see answer by rothauserc(4718)

Question 784649: What quantity of a 55% acid solution must be mixed with a 45% solution to produce 600 mL of a 50% solution?
Click here to see answer by josgarithmetic(39618)

Question 784795: How much water should be added to 16 mL of 20% alcohol solution to reduce the concentration to 8%?
The answer is NOT 24 ml like I read on a previous solution on this site!!
Click here to see answer by solver91311(24713)

Question 784999: Ryan has six liters of 74% acid. How much acid should he add to make a solution that is 80% acid?
Click here to see answer by josgarithmetic(39618)

Question 784974: suppose that you have a supply of a 20% solution of alcohol and a 70% solution of alcohol. How man quarts of each should be mixed to produce 50 quarts that is 40% alcohol?
Click here to see answer by josgarithmetic(39618)

Question 785085: a 12 lit. solution in 33.33 %acid . how much water must be added to get the sol. having 20% acid
Click here to see answer by mananth(16946)

Question 785147: One jar contains 5/6 alcohol and another 8/9 alcohol. How many liters taken from each jar are required to fill a third jar with a capacity of 24 liters so that the mixture will be 7/8 alcohol?
Click here to see answer by harpazo(655)

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