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Question 1111048: A chemist needs to strengthen a 15% alcoholic solution to one of 32% alcohol .how much pure alcohl should be added to 800 ml of 15% solution?
Click here to see answer by Alan3354(69443)

Question 1111035: If a certain rectangular lot were 3 meters shorter and 2 meters wider, the area would be 7 square meters greater. Find the dimensions of the lot.
Click here to see answer by josgarithmetic(39617)

Question 1111037: A crew rowed 7 miles upstream in 2 hours and the 6 1/2 miles downstream in 1 hour. Find the rate of the crew in still water and the rate of the current.
Click here to see answer by ikleyn(52781)

Question 1111245: A pharmacist wants to mix a 45% saline solution with a 27% saline solution to get 108ml of a 40% saline solution how much of each solution should she use?
Click here to see answer by josgarithmetic(39617)

Question 1111253: To make a 6.0 L of a fruit punch that contains 12% v/v ethanol, how much 90% ethanol must be mixed with how much fruit juice?
Click here to see answer by josgarithmetic(39617)

Question 1111362: Question 3 Nicole's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs $5.30 Nicole per pound, and type B coffee costs $4.05 per pound. This month, Nicole made 169 pounds of the blend, for a total cost of $803.20. How many pounds of type A coffee did she use?
Click here to see answer by addingup(3677)

Question 1111359: How would I solve this:The concentration of a saline solution is given by the function c)x=0.2/1+x,where x represents the amount of water (in liters) used to dilute the solution.How much water must be added to obtain a solution that is exactly 10% salt?
Click here to see answer by josmiceli(19441)

Question 1111484: A solution of alcohol and water contains 29 milliliters of alcohol and 87 milliliter of water. What is the ratio of alcohol to water and the ratio of alcohol to total volume?
Click here to see answer by stanbon(75887)

Question 257812: A mixture of acid and water is 35% acid. if the mixture contains a total of 40 Liters, how many liters of pure acid are in the mixture? How many liters of pure water are in the mixture?
Click here to see answer by amalm06(224)

Question 1111521: The Sum of two integers in 174, and the larger number is 12 more than 2 times the smaller number. Find the two numbers.
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Question 1111522: How many liters each of a 25% acid solution and a 65% acid solution must be used to produce 80 liters of a 45% acid solution?
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Question 1111522: How many liters each of a 25% acid solution and a 65% acid solution must be used to produce 80 liters of a 45% acid solution?
Click here to see answer by ikleyn(52781)

Question 1111522: How many liters each of a 25% acid solution and a 65% acid solution must be used to produce 80 liters of a 45% acid solution?
Click here to see answer by greenestamps(13200)

Question 746137: how many liters each of a 15% acid solution and a 25% acid solution must be used to produce 80 liters of a 20% acid solution
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Question 746137: how many liters each of a 15% acid solution and a 25% acid solution must be used to produce 80 liters of a 20% acid solution
Click here to see answer by Alan3354(69443)

Question 433829: How much clay do you need to add to 6 ft^3 of soil with 30% clay in order to make a soil with 72% clay?
I suck at setting problems up, but can solve them fine. Having troubles with this one.
Thanks,
Tyler
Click here to see answer by amalm06(224)

Question 1111565: Two mechanics worked on a car. The first mechanic worked for 20 hours, and the second mechanic worked for 15 hours. Together they charged a total of $2225. What was the rate charged per hour by each mechanic if the sum of the two rates was 130 per hour?
Click here to see answer by ikleyn(52781)

Question 1111571: Two friends have built a lemonade stand, and they plan to start out by selling 20 liters of lemonade containing 23% lemon juice. To make this, they will mix some homemade lemonade containing 27% lemon juice with some store-bought lemonade that contains 22% lemon juice. How much of each type should the friends use?
Click here to see answer by amalm06(224)

Question 1111601: The price of milk has been steadily increasing 5% per year. If the cost of a gallon is now $3.89:
a. What will it cost in 10 years?
b. What did it cost 5 years ago?
Click here to see answer by mananth(16946)

Question 1111518: $12,305 is invested, part at 10% and the rest at 8%. If the interest earned from the amount invested at 10% exceeds the interest earned from the amount invested at 8% by 1025.30, how much is invested at each rate?
Click here to see answer by mananth(16946)

Question 1111650: You have one type of candy that sells for $4.30/lb and another type of candy that sells for $9.10/lb. You would like to have 43.2 lbs of a candy mixture that sells for $8.10/lb. How much of each candy will you need to obtain the desired mixture
Click here to see answer by ikleyn(52781)

Question 1111490: a rectangular flower graden is surround by walkway 4 meters wide.The flower garden is 6 meters longer than it is wide. if the area of only he gardenia 137 square meter less than twice the area of only the walkway, find the dimensions of the entire plot
Click here to see answer by ankor@dixie-net.com(22740)

Question 1111778: Ellen wishes to mix candy worth $1.57 per pound with candy worth $3.69 per pound to form 26 pounds of a mixture worth $3.04 per pound. How many pounds of the more expensive candy should she use?
Click here to see answer by josgarithmetic(39617)

Question 1074549: One solution contains 20% alcohol and another solution contains 60% alcohol. Some of each of the two solutions is mixed to produce 10 liters of a 50% solution. How many liters of the 60% solution should be used?
Click here to see answer by amalm06(224)

Question 1095956: A 70% antiseptic solution is prepared by mixing a 50% antiseptic solution and a 80% antiseptic solution. How many liters of each must be used to produce 20 liters of the 70% antiseptic solution?
Click here to see answer by amalm06(224)

Question 998363: Suppose that one solution contains 40% alcohol and another solution contains 80% alcohol. How many liters of each solution should be mixed to make 8.5 liters of a 70% alcohol solution?
Click here to see answer by amalm06(224)

Question 10331: How much water should be added to 20 ounces of a 15% solution of alcohol to dilute it to a 10% solution?
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Question 10331: How much water should be added to 20 ounces of a 15% solution of alcohol to dilute it to a 10% solution?
Click here to see answer by ikleyn(52781)

Question 776036: how much of Brand A fruit punch (24% fruit punch) must be mixed with 6 gal. of Brand B fruit punch (19% fruit juice) to create a mixture containing 22% fruit juice?
Click here to see answer by amalm06(224)

Question 1111872: a machinist invested $15,000, part at 6% simple interest and the remainder at 4% simple interest for one year. how much was invested at each rate if each investment earned the same interest?
Click here to see answer by ikleyn(52781)

Question 1111868: tom invested part of $12,000 in a 5% simple interest account and the remainder in a 7.5% simple interest account. if the total interest earned from the two investments in one year was $775, how much was invested in each account?
Click here to see answer by ikleyn(52781)

Question 1111896: how many pounds of regular coffee that sells for $4 per pound and how many pounds of premium coffee that sells for $8 per pound should be blended to obtain 24 pounds of gourmet blend that sells for $6 per pound?
Click here to see answer by ikleyn(52781)

Question 1111898: how many pounds of chocolate covered raisins that sell for $4.90 per pound should be mixed with chocalte buttons with peanuts that sell for $5.21 per pond to obtain 41 pounds of trail mix that sells for $204.
Click here to see answer by ikleyn(52781)

Question 1111894: total of 4500 pounds of material. A newspaper weighed three times as much as aluminum cans and aluminum weighed twice as much as glass, what was the weight of each material, please
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Question 1111904: how many liters of a 30% salt solution should be mixed with a 80% salt solution to obtain 120 liters of a 60% salt solution?
Click here to see answer by Alan3354(69443)

Question 1111905: how many liters of a 20% alcohol solution and how many liters of pure alcohol should be mixed to obtain 8 liters of a 70% alcohol solution?
Click here to see answer by Alan3354(69443)

Question 1111906: how many quarts of a 60 % anitfreeze solution and how many quarts of pure water should be mixed to make 12 quarts of a 45% antifreeze solution?
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