An item is originally priced $68.89. It is on sale for 42 percent of the original price. Which is an estimate of the sale price?

Estimate 42% of $68.89 by rounding to 40% of $70. Since 0.4 × 70 = 28, the sale price is about $28. The exact price is about $28.93, so $28 is the closest estimate.

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