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Question 414851: How many pounds of an $83 per pound substance must be mixed with an $11 per pound substance to get 240 lbs of an alloy which will cost $28 per pound? Round to the nearest pound.
Click here to see answer by stanbon(75887)

Question 414996: How many liters of a 5% solution of hydrochloric acid must be mixed with 12 liters of a 1% solution to obtain a 4% solution?
Click here to see answer by stanbon(75887)

Question 414970: Hi! I have a problem that has stumped me. Here it is:
A nurse has 2 solutions that contain different concentrations of a certain medication. One is a 12% concentration, and the other is an 8% concentration. How many cubic centimeters (cc) of each should she mix together to obtain 20 cc of a 9% solution.
So far, I started something like this: .12x + .08x = 20(.09), but not sure that is right and don't know how to plug back into problem to get the concentrations.
THANK YOU SO MUCH!!
Click here to see answer by ankor@dixie-net.com(22740)

Question 414986: How many quarts of pure anitifreeze must be added to 4 quarts of a 20% antifreeze solution to obtain a 50% antifreez solution?
Click here to see answer by josmiceli(19441)

Question 415082: a chemist needs 6 liters of 20 percent acid solution. he has available 25 percent acid solution and a 10 percent acid solution. how much of each solution should be mixed in order to create thsi 20 percent solution
could u list the steps and formula?
Click here to see answer by mananth(16946)

Question 415079: a chemist needs 6 liters of 20 percent acid solution. he has available 25 percent acid solution and a 10 percent acid solution. how much of each solution should be mixed in order to create this 20 percent solution
Click here to see answer by mananth(16946)

Question 415077: a chemist needs 6 liters of 20 percent acid solution. he has available 25 percent acid solution and a 10 percent acid solution. how much of each solution should be mixed in order to create thsi 20 percent solution
Click here to see answer by mananth(16946)

Question 415112: how many gallons of a 70% antifreeze solution must be mixed with 100 gallons of 30% antifreeze to get a mixture that is 60% antifreeze?
Click here to see answer by Tatiana_Stebko(1539)

Question 415218: What would the price per pound be if I paid 104.00 for 500 pounds.?
Click here to see answer by ewatrrr(24785)

Question 415218: What would the price per pound be if I paid 104.00 for 500 pounds.?
Click here to see answer by MathLover1(20849)

Question 415490: Please help me solve this problem: A collection of 102 nickels, dimes, and quarters is worth $13.60. There are 14 more nickels than dimes. How many quarters are there?
Click here to see answer by stanbon(75887)

Question 415667: A saline solution contains 3% salt. How much water should be added to 100 mililiters of this solution to dilute it to a 2% solution?
Thank you
Click here to see answer by mananth(16946)

Question 415677: Find four consecutive integers whose sum is between 51 and 65.
Click here to see answer by ewatrrr(24785)

Question 415858: Tom wants to make 10 gallons of a 10% saline solution. He has 9 gallons of a 15% saline solution, and can get as much water as he needs. Can he make the 10 gallons of 10% solution?
Click here to see answer by josmiceli(19441)

Question 416038: soybean is 16% protein; cornmeal is 8% protein. How many pounds of each should be mixed together in order to get 320 lb mixture that is 11% protein. Can you help me on this????
Click here to see answer by mananth(16946)

Question 416040: There are 48 members of the band. Of these, 10 are left-handed and 19 wear eyeglasses. There are 27 members who are NOT left-handed and do NOT wear eyeglasses. How many left-handed members wear eyeglasses?
Click here to see answer by Edwin McCravy(20055)

Question 416029: If $112,500.00 is 90% of payment what is 10% amount remaining?
Click here to see answer by rfer(16322)

Question 416217: a tank has a capacity of10 gal. when it is fill it contains 15% alcohol. how many gallons must be replaced by on 80% alcohol solution to give 10 gallons of 70% solution?
Click here to see answer by mananth(16946)

Question 416360: combine an alloy that costs $4.30 and ounce with an alloy that cost $1.80 an ounce. Hou many ounces of each were used to make a mixture of 200 ounces costing $2.50 per ounce?
Click here to see answer by josmiceli(19441)

Question 416496: A chemical solution contains 6 percetn salt. How much salt is in 3ml of solution?

Click here to see answer by stanbon(75887)

Question 416780: A laboratory employee is mixing a 10% saline solution with 4% saline solution. How much of each solution is needed to make 500 milliliters of a 6% solution.
Click here to see answer by mananth(16946)

Question 416981: express the ratio as a fraction in simplest form
3 gallons to 15 quarts
Click here to see answer by josmiceli(19441)

Question 417064: Doreen is a chemist. she needs to prepare 24 ounces of a 7% solution. Find the amount of 12% solution and the amount of a 6% solution she should mix to get this solution?
Amount of 12%:
Amount of 6%:
Click here to see answer by josmiceli(19441)

Question 417308: An alloy that is 50% gold is to be combined with an alloy that is 75% gold to produce 20 ounces of an alloy that is 60% of gold. How many ounces of each alloy must be used?
Click here to see answer by mananth(16946)

Question 417346: A juice drink manufacturer has found mixing pineapple juice concentrate and fresh squeezed orange juice is the most cost effective way to produce its breakfast beverage. The pineapple juice comes in two concentrated forms, 24% and 60% pineapple juice, which must be combined into a solution that can be mixed with the orange juice. If 50 gallons of 24% juice is used, how much of the 60% just must be used to obtain a 50% pineapple juice solution?
Click here to see answer by mananth(16946)

Question 417344: A researcher orders a solution of 32.5% glucose for her lab. However, she needs a stronger solution, one that is 46% glucose. Fortunately, she has 15.6 liters of 91.9% glucose solution in the stock room. Assuming there is an adequate supply of the 32.5% solution, how many liters of 46% solution can be made by mixing the two together?
Click here to see answer by lwsshak3(11628)

Question 417633: PLEASE
If 5 men to paint five flagpoles in 5 hours, how many men are needed to paint the 15 flagpoles in 15 hours?
.
I know we should use rate here..but i don't know how :(

Click here to see answer by stanbon(75887)

Question 417447: a 5 horsepower(hp) pump can empty a pool in 5 gours. A smaller, 2hp pump empties the same pool in 8 hours. The pumps are used together to being emptying this pool. After two hours, the hp pump breaks down. How long will it take the larger pump top empty the pool?
Click here to see answer by ankor@dixie-net.com(22740)

Question 417730: Will solve the equation. Just need help utilizing proper formula. Thank you. How many gallons of a 3% salt solution must be mixed with 50 gallons of a 7% solution to obtain a 5% solution?
Click here to see answer by mananth(16946)

Question 417901: A mixture of alcohol and water contains a total of 36 oz of liquid. There are 9 oz of pure alcohol in the mixture. What percent of the mixture is water? What percent is alcohol?
Click here to see answer by josmiceli(19441)

Question 418021: How many ounces of the two alcohol solutions in the illustration must be mixed to obtain 100 ounces of a 12.2% solution?
The illustration has two bottles = a bottle
8% + 15% = 100 oz (12.2%)
Please list how the problem was solved. Thank you!
Click here to see answer by mananth(16946)

Question 418046: how much alcohol must a nurse add to 10ml of a 60% alcohol solutions to strengthen it to 90% solution?
Click here to see answer by stanbon(75887)

Question 418175: The capacity of a car radiator is 20 quarts. If it�s full of a 55% antifreeze solution, how many quarts must be drained off and replaced by an 80% solution to make 20 quarts of a 70% solution.
Click here to see answer by josmiceli(19441)

Question 418248: How many scoops of natural seedless raisens costing $3.45 per scoop must be mixed with 20 scoops of golden seedless raisens costing $2.55 per scoop to obtain a mixture costing $3 per scoop?
Click here to see answer by nerdybill(7384)

Question 418364: i need help with a homework my math teacher gave me and its kind of hard for me and no one in my family know how to do it.

One number is 12 more than half another number. The two numbers total 60. Find the numbers
Click here to see answer by richard1234(7193)

Question 418268: Two ships leave the same port at 10:00 A.M. Ship A travels at the constant rate of 25 MPH at a bearing of S70E; Ship B travels at a constant rate of 20 MPH at a bearing of N29W. How far apart are the ships at noon?
b. what is the bearing to Ship B from Ship A at noon?
Click here to see answer by lwsshak3(11628)

Question 418499: Find how many quarts of 4% butterfat milk and 1% butterfat milk should be mixed to yield 60 quarts of 2% butterfat milk.
Click here to see answer by mananth(16946)

Question 418511: 180 TICKETS SOLD = $1620 HOW MANY $10 tickets and $7.50 tickets
Click here to see answer by mananth(16946)

Question 418583: Mr. D. Bum has 5 quarts of punch that is 53% lemonade. He wants to make some punch containing 82% lemonade. Mr. Bum can add either water or lemonade to the punch, but not both. How much water or lemonade should he add? L represents the amount of lemonade added. Type in an equation that solves for L.
Click here to see answer by mananth(16946)

Question 418674: A mixture of 10% disinfectant solution is to be made from 11% and 7% disinfectant solutions. How much of each solution should be used if 44 gallons of 10% solution are needed?
Click here to see answer by josmiceli(19441)

Question 418675: How much 60% antifreeze solution and 54% antifreeze solution should be combined to give 39 gallons of 58% antifreeze solution?
Click here to see answer by nerdybill(7384)

Question 418987: A ferry leaves a harbor and travels to a resort island at an average speed of 20 mph. On the return trip, the ferry travels at an average speed of 10 mph because of fog. The total time for the trip is 3 h. How far is the island from the harbor?
Click here to see answer by josmiceli(19441)

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