Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 5 - Number Theory and the Real Number System - 5.3 The Rational Numbers - Exercise Set 5.3 - Page 285: 118

Answer

\[\frac{29}{36}=0.80\overline{5}\,\,\text{and}\,\,\frac{28}{35}=0.8\] This shows that \[\frac{29}{36}>\frac{28}{35}\].

Work Step by Step

The rational number \[\frac{29}{36}\] can be written in decimal form as follows: \[36\overset{0.80555}{\overline{\left){\begin{align} & 29.000 \\ & \underline{28\,\,8} \\ & \,\,\,\,\,\,\,200 \\ & \underline{\,\,\,\,\,\,\,180} \\ & \,\,\,\,\,\,\,\,\,200 \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,. \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,. \\ \end{align}}\right.}}\] The rational number \[\frac{28}{35}\] can be written in decimal form as follows: \[35\overset{0.8}{\overline{\left){\begin{align} & 28.000 \\ & \underline{28\,\,0} \\ & \,\,\,\,\,\,\,0 \\ \end{align}}\right.}}\] Thus, the rational numbers in decimal form can be written as \[\frac{29}{36}=0.80\overline{5}\,\,\text{and}\,\,\frac{28}{35}=0.8\] This shows that \[\frac{29}{36}>\frac{28}{35}\].
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