Basic College Mathematics (10th Edition)

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

Chapter 5 - Rates of Reaction - Review Exercises - Page 372: 11



Work Step by Step

We can write the given ratio as a fraction and then simplify in lowest terms. Since 1 day has 24 hours, we can write 3 days as $(3\times24)=72$ hours. $\frac{8hours}{72hours}$ Since both the denominator and numerator have the same unit, we can divide out the common unit. $\frac{8}{72}=\frac{8\div8}{72\div8}=\frac{1}{9}$
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