Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 2 - Solving Equations - Chapter Review: 42

Answer

5.70 pounds per year

Work Step by Step

This problem involves a unit conversion. We know that there are 365 days in a year. Thus, we find: $\frac{. 25 oz}{day} \times \frac{365 days}{year} \times \frac{1 pound}{16 oz}=5.70$ pounds per year. Note, we need to cancel out the unit of ounces, so we multiply 2.25 ounces by a fraction with ounces in the denominator. We also need to cancel out the unit of days, which is in the denominator of the first fraction, so we multiply by a fraction with days in the numerator.
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