Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10:
ISBN 13:

Chapter 3 - Adding and Subtracting Fractions - 3.4 Adding and Subtracting Mixed Numbers - 3.4 Exercises - Page 232: 73

Answer

Estimate=90 ft Exact=89 ft

Work Step by Step

Estimate: 15$\frac{1}{2}$$\approx$16 18$\frac{3}{4}$$\approx$19 24$\frac{1}{4}$$\approx$24 30$\frac{1}{2}$$\approx$31 16+19+24+31=90 Exact: 15$\frac{1}{2}$+18$\frac{3}{4}$+24$\frac{1}{4}$+30$\frac{1}{2}$ 15$\frac{2}{4}$+18\frac{3}{4}$+24\frac{1}{4}$+30\frac{2}{4}$ 87\frac{8}{4}$ 89
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