Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 6 - Percent - 6.2 Percents and Fractions - 6.2 Exercises: 60

Answer

$\frac{3}{10}=.3=30$%

Work Step by Step

We are given the fraction $\frac{3}{10}$. We know that $\frac{3}{10}=3\div10=.3$ To write $\frac{3}{10}$ as a percentage, we can set $\frac{3}{10}$ equal to $\frac{p}{100}$ (where p is the percentage representation of the given fraction) and take the cross products to solve for p. $\frac{3}{10}=\frac{p}{100}$ $3\times100=10\times p$ $300=10p$ Divide both sides by 10. $p=30$% Therefore, $\frac{3}{10}=.3=30$%.
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