SOLUTION: 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.
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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. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! 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.
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Equation:
active + active = active
83x + 11(240-x) = 28*240
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83x + 11*240 - 11x = 28*240
72x = 17*240
x = 56 2/3 lb. (amt. of $83 substance needed)
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240-x = 183 1/3 lb (amt. of $11 substance needed)
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Cheers,
Stan H.
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