Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 3 - Test: 21

Answer

There were 244 female runners.

Work Step by Step

Let $w$ be the number of women in the race. The number of men is $w+112$. $w+w+112=600$ $\longrightarrow$combine like terms $2w+112=600$ $\longrightarrow$addition property $2w+112-112=600-112$ $\longrightarrow$combine like terms $2w=488$ $\longrightarrow$multiplication property $2w\div2=488\div2$ $\longrightarrow$divide $w=244$
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