SOLUTION: A lumber company combined oak wood chips that cost $3.50 per pound with pine wood chips that costs $2.20 per pound. How many pounds of each were used to make a 100-pound mixture co

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Question 944413: A lumber company combined oak wood chips that cost $3.50 per pound with pine wood chips that costs $2.20 per pound. How many pounds of each were used to make a 100-pound mixture costing $2.72 per pound?
Answer by lwsshak3(11628) About Me  (Show Source):
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A lumber company combined oak wood chips that cost $3.50 per pound with pine wood chips that costs $2.20 per pound. How many pounds of each were used to make a 100-pound mixture costing $2.72 per pound?
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let x=amt of oak wood chips used
100-x=amt of pine wood chips used
..
3.50x+2.20(100-x)=2.72*100
3.50x+220-2.20x=272
1.30x=52
x=40
100-x=60
amt of oak wood chips used=40 lbs
amt of pine wood chips used=60 lbs