SOLUTION: How many pounds of coffee beans selling for $2.60 per pound should be mixed wit 7 pounds of coffee beans selling for $2 per pound to obtain a mixture selling for $2.18 per pound?
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Question 255213: How many pounds of coffee beans selling for $2.60 per pound should be mixed wit 7 pounds of coffee beans selling for $2 per pound to obtain a mixture selling for $2.18 per pound?
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
2.60x+2*7=2.18(x+7)
2.60x+14=2.18x+15.26
2.60x-2.18x=15.26-14
.42x=1.26
x=1.26/.42
x=3 pounds of $2.60 coffee is used.
Proof:
2.60*3+2*7=2.18(3+7)
7.8+14=21.8
21.8=21.8
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