9. A carpenter purchased 50 ft of redwood and 80 ft of pine for a total cost of $275. A second purchase, at the same prices, included 90 ft of redwood and 60 ft of pine for a total cost of $369. Find the cost per foot of redwood and of pine. redwood _________ dollars per foot pine _________ dollars per foot
9. A carpenter purchased 50 ft of redwood and 80 ft of pine for a total cost of $275. A second purchase, at the same prices, included 90 ft of redwood and 60 ft of pine for a total cost of $369. Find the cost per foot of redwood and of pine. redwood _________ dollars per foot pine _________ dollars per foot
Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter2: Working With Real Numbers
Section2.3: Rules For Addition
Problem 16P
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9. A carpenter purchased 50 ft of redwood and 80 ft of pine for a total cost of $275. A second purchase, at the same prices, included 90 ft of redwood and 60 ft of pine for a total cost of $369. Find the cost per foot of redwood and of pine.
| redwood | _________ dollars per foot |
| pine | _________ dollars per foot |
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