Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 8 - Personal Finance - 8.1 Percent, Sales Tax and Discounts - Exercise Set 8.1: 65

Answer

A 100-dollar bill is enough to cover the total cost.

Work Step by Step

The bill comes to $\$80$. We can find the amount of a 20% tip. Note that 20% = 0.20 $tip = (0.20)(\$80) = \$16$ The total amount is $\$80+\$16$, which is $\$96$. A 100-dollar bill is enough to cover the total cost.
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