Elementary Technical Mathematics

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

Chapter 1 - Section 1.14 - Rate, Base, and Part - Exercises - Page 84: 26



Work Step by Step

The base is the total length of the trip, which is the sum of the amount under VFR and the amount under IFR. $B=1.5+0.4=1.9$ hours The part is the amount of time flown under IFR, 0.4 hours. The rate is unknown. $R=\frac{P}{B}=\frac{0.4}{1.9}=0.2105$ To convert the decimal to a percent, move the decimal two places to the right. Round to the nearest tenth. $0.2105\approx21.1\%$
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