pr957362
13.10.2019 •
Mathematics
Apack of 30 sells for $7.97, and a 12-pack of the same brand of pencils sells for $4.77. which is the better buy? how do you know?
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Ответ:
estimation : 2 * 2 = 4
actual : 2.4 * 1.7 = 4.08