Mathematics
jerseygurl
8

a store mixes red fescue worth $12 per pound and chewings fescue worth $16 per pound. The mixture is to sell for $15 per pound. Find out how much of each should be used to make a 552- pound mixture.

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(1) Answers
alexisgm8111

Answer is: 414 pounds of red fescue and 138 pounds of chewings fescue is needed to produce 552 pounds of mixture.Explanation: x - how much of red fescue is needed for one pound of mixture y - how much of chewings fescue is needed for one pound of mixturex*12+ y*16 = 15x + y = 1 so, x=1-y putting it into first line:(1-y)*12 + y*16 = 15 12 - 12*y + 16*y = 15 4*y = 3 y=3/4 so, x= 1-3/4; x=1/4So to produce 552 pounds of mixture we need..To produce 1 pound of mixture we need: 3/4 pound of red fescue and 1/4 pound of chewing fescue so to produce 552 pounds of miture we need: 552*3/4 - red fescue, which is 414 pounds needed and 552/4 - chewings fescue, which is 138 pounds needed

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