A pizza delivery order costs $34.35. You decide to give the driver

$40. What percent tip did you leave? (round to the nearest tenth of a

percent)

rate = 16.5 %

Step-by-step explanation:

First determine how much you gave as a tip

40-34.35 = 5.65

The order * tip rate = tip

34.35 * rate = 5.65

Divide each side by 34.35

34.35 * rate / 34.35 = 5.65/34.35

rate =.164483261

Change to percent form

rate = 16.4483261%

To the nearest tenth

rate = 16.5 %