SOLUTION: The manager of a farmer's market has 400 lb of grain that costs $1.50 per pound. How many pounds of meal costing $0.80 per pound should be mixed with the 400 lb of grain to produce

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Question 902590: The manager of a farmer's market has 400 lb of grain that costs $1.50 per pound. How many pounds of meal costing $0.80 per pound should be mixed with the 400 lb of grain to produce a mixture that costs $1.36 per pound?

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
0.008*x+0.015*400=0.0136(400+x)
0.008*x+6.0=5.44+0.0136x
0.008x-0.0136x=5.44-6.0
-0.0056x=-0.56
x=100.0 lbs of $0.80 is added to 400 lbs of 1.50 to get 500.0 lbs at $1.36


check
0.008*100.0+0.015*400=0.0136(400+100.0)
0.8+6.0=0.0136(500.0)
6.8=6.8
ok