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Mathematics, 23.02.2021 18:20 rubieceleste548

A carpenter purchased 50 ft of redwood and 90 ft of pine for a total cost of $31.20. A second purchase, at the same prices, included 200 ft of redwood and 100 ft of pine for a total cost of $78. Find the cost per foot of redwood and of pine

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A carpenter purchased 50 ft of redwood and 90 ft of pine for a total cost of $31.20. A second purch...
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