Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10: 0134467795
ISBN 13: 978-0-13446-779-5

Chapter 7 - Measurement - 7.4 Problems Solving with Metric Measurement - 7.4 Exercises - Page 507: 7


It takes 71 beats to pass all the blood through the heart.

Work Step by Step

Convert L to mL by moving the decimal. 5L=5000mL Use ratios and cross multiplication to find the number of beats. $\frac{1beat}{70mL}=\frac{x beats}{5000mL}$ $70x=(1)(5000)$ $70x\div70=5000\div70$ $x=71.4$
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