Basic College Mathematics (10th Edition)

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Chapter 2 - Multiplying and Dividing Fractions - 2.5 Multiplying Fractions - 2.5 Exercises - Page 151: 53

Answer

Approximately 1600 of the NY supermarkets are in medium to large population areas. 1762 NY supermarkets are in medium to large population areas.

Work Step by Step

Use front end rounding to estimate the number of supermarkets in NY. $2202 \approx 2000$ Multiply by $\frac{4}{5}$ to find the number that are in medium to large population areas. $2000 \times \frac{4}{5}$ = $\frac{2000}{1} \times \frac{4}{5}$ = $\frac{8000}{5}$ = $\frac{8000 \div 5}{5 \div 5}$ = $\frac{1600}{1}$ = 1600 To find the exact number that are in medium to large population areas multiply the exact number of NY supermarkets by $\frac{4}{5}$. $2202 \times \frac{4}{5}$ = $\frac{2202}{1} \times \frac{4}{5}$ = $\frac{8808}{5}$ = $\frac{8808 \div 5}{5 \div 5}$ = $\frac{1761R3}{1}$ = $1761 \frac{3}{5}$ $\approx 1762$
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