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The sum of three numbers is -48. The first number is twelve more than the second number, and the third number is 20 less than twice the second number. Find the three numbers.
A machine can fill 1,000 cases of soda cans in 3 hours. A second machine requires 5 hours to fill the same amount. How long will it take both machines to fill an order of 5,000 cases?
Soybean meal is 16 percent protein. Cornmeal is 8 percent protein. How many pounds of each should be mixed together in order to get 320-lb mixture that is 15% protein?
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