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07-10-2017
Mathematics

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A carpenter purchased 70ft of redwood and 70ft of pine for a total cost of $282. A second purchase, at the same prices, included 100ft of redwood and 50?ft of pine for a total cost of $390. Find the cost per foot of redwood and of pine.

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YuniBlub YuniBlub

07-10-2017

i think the answer is $2.01 per 1ft of redwood and pine

282/2
=141

$141/70ft ÷ 70/70
=$20.1 per 1ft

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