Which is a better buy—100 sheets of binder paper at $2.50, or 150 sheets at $3.50?

Explanation:

$2.50 ÷ 100 sheets = $.025 per sheet

$3.50 ÷ 150 sheets = $.023 per sheet

 Since $.023 < $.025, the rate of $3.50 for 150 sheets is a better buy.

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