Prealgebra (7th Edition)

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

Chapter 3 - Cumulative Review: 49

Answer

The cost of the software is \$420. The cost of the computer system is \$1680.

Work Step by Step

Let the cost of the software be $s$. The cost if the computer system be $4s$. $s+4s=2100$ $\longrightarrow$combine like terms $5s=2100$ $\longrightarrow$multiplication property $5s\div5=2100\div5$ $\longrightarrow$divide $s=420$ $4s=4\times420=1680$
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