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Johnny Can Buy two 8-foot pieces of 2" by 4" lumber at $2.60 each, or three 6-foot pieces for $1.92 each. Which is the better buy per foot?
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Nov 11, 2018
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Johnny Can Buy two 8-foot pieces of 2" by 4" lumber at $2.60 each, or three 6-foot pieces for $1.92 each. Which is the better buy per foot?
Mathematics
middle-school
Yorgos Pagles
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Yorgos Pagles
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Set them up as a proportion to find the unit cost for each foot.
Divide 2.6 by 8.
2.6/8 = 0.325
Divide 1.92 by 6.
1.92/6 = 0.32.
Three 6-foot pieces are better by 0.005.
PrathapG
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Nov 17, 2018
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PrathapG
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