SOLUTION: How many pounds of hamburger that costs $1.60 per pound must be mixed with 70 pounds of hamburger that costs $2.10 per pound to make a mixture that costs $1.70 per pound.

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Question 190502: How many pounds of hamburger that costs $1.60 per pound must be mixed with 70 pounds of hamburger that costs $2.10 per pound to make a mixture that costs $1.70 per pound.
Answer by jonvaliente(64) About Me  (Show Source):
You can put this solution on YOUR website!
CORRECTION!
Let x=no of pounds of hamburger that costs 1.60 per pound
.
1.60%2Ax%2B2.10%2A70=%28x%2B70%29%2A1.70
1.6x%2B147=1.7x%2B119
.
Subtracting 119 from both sides, we get:
.
1.6x%2B147-119=1.7x%2B119-119
1.6x%2B28=1.7x
.
Subtracting 1.6x from both sides, we get:
.
1.6x-1.6x%2B28=1.7x-1.6x
28=0.1x
.
Dividing both sides by 0.1, we get:
.
28%2F0.1=0.1x%2F0.1
x=280
.
Therefore we must add 280 pounds of hamburger.