Answer
True
Work Step by Step
$\frac{600}{420}=\frac{20}{14}$
Cross products: $600\times14=20\times420$
$8400=8400$
Therefore, the proportion is true.
Basic College Mathematics (10th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0134467795
ISBN 13:
978-0-13446-779-5
Chapter 5 - Ratio and Proportion - 5.3 Proportions - 5.3 Exercises - Page 351: 26
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