Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 1 - Test - Page 103: 25



Work Step by Step

Write the mixed number in improper fraction form to obtain: $=\dfrac{3}{8} \div \dfrac{16(3)+5}{16} \\=\dfrac{3}{8} \div \dfrac{53}{16}$ Use the rule $\dfrac{a}{b} \div \dfrac{c}{d} = \dfrac{a}{b} \times \dfrac{d}{c}$ to obtain: $=\dfrac{3}{8} \times \dfrac{16}{53}$ Cancel common factors then multiply to obtain: $\require{cancel} \\=\dfrac{3}{\cancel{8}} \times \dfrac{\cancel{16}^2}{53} \\=\dfrac{3}{1} \times \dfrac{2}{53} \\=\dfrac{3(2)}{1(53)} \\=\dfrac{6}{53}$
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