Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10:
ISBN 13:

Chapter 2 - Multiplying and Dividing Fractions - 2.8 Multiplying and Dividing Mixed Numbers - 2.8 Exercises - Page 175: 13

Answer

Estimate: $50$ Exact: $49\frac{5}{10}$

Work Step by Step

Estimate: round the three numbers to 5, 2, and 5 and multiply. Exact: change the numbers into improper fractions: $\frac{9}{2}, \frac{11}{5}, \frac{5}{1}$ Multiply: $\frac{9}{2}\times\frac{11}{5} = \frac{99}{10}$ $\frac{99}{10}\times\frac{5}{1} = \frac{495}{10}$ Change into a mixed (or whole) number: $49\frac{5}{10}$
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