SOLUTION: Gorp Corp mixes raisins that cost $5 per lb with peanuts that cost $3.70 per lb. How many lbs of raisins should be combined with 10 lbs of peanuts to make a mixture worth $4 per lb

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Question 835052: Gorp Corp mixes raisins that cost $5 per lb with peanuts that cost $3.70 per lb. How many lbs of raisins should be combined with 10 lbs of peanuts to make a mixture worth $4 per lb?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
r=pounds of raisins

%285r%2B3.70%2A10%29%2F%28r%2B10%29=4

A more complete explanation is in the lesson, "Mixture: one material quantity unknown", found in the lessons link of my profile.