## Basic College Mathematics (9th Edition)

estimated : 5 exact : 4$\frac{4}{15}$
9$\frac{3}{5}$ $\div$ 2$\frac{1}{4}$ Estimate the answer by rounding the mixed numbers 9$\frac{3}{5}$ round to 10 and 2$\frac{1}{4}$ round to 2 10 $\div$ 2 = 5 To find the exact answer, change each mixed number to an improper fraction. 9$\frac{3}{5}$ = $\frac{48}{5}$ 2$\frac{1}{4}$ = $\frac{9}{4}$ Next, use the reciprocal of the second fraction and change division to multiplication. Reciprocal of $\frac{9}{4}$ = $\frac{4}{9}$ $\frac{48}{5}$ * $\frac{4}{9}$ = $\frac{64}{15}$ = 4$\frac{4}{15}$ The exact answer is 4$\frac{4}{15}$ The exact answer is reasonable