Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 2 - Real Numbers - 2.1 - Rational Numbers: Multiplication and Division - Problem Set 2.1 - Page 49: 79


Three cakes need $\frac{9}{4}$ cups of sugar.

Work Step by Step

One birthday cake calls for $\frac{3}{4}$ cups of sugar. To make 3 cakes, we multiply $\frac{3}{4}$ by 3. So, $\frac{3}{4}$ $\times$ 3 = $\frac{3\ \times 3}{4}$ = $\frac{9}{4}$ cups of sugar Three cakes need $\frac{9}{4}$ cups of sugar.
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