Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10:
ISBN 13:

Chapters 1-7 - Cumulative Review Exercises - Page 529: 17

Answer

4 is 5% of 80.

Work Step by Step

$\frac{part}{whole}=\frac{percent}{100}$ $\frac{4}{80}=\frac{x}{100}\longrightarrow$ Cross multiply then solve for x $80x=(4)(100)\longrightarrow$ Simplify $80x=400\longrightarrow$ Divide both sides by 80 $80x\div80=400\div80\longrightarrow$ Simplify $x=5$
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