Question

race drivers must complete 200 laps in the Daytona 500. If Ricky Bobby only completed 57% of the race, how many laps did he complete?

Answer 1

200 x 0.57 = 114 laps completed

Answer 2

We can set up a proportion to figure out how many laps out of 200 laps is 57% out of 100%

$\frac{x}{200} = \frac{57}{100}$

Cross multiply

$100x = 57(200)$

$x = \frac{57(200)}{100}$

$x = 2(57) = 114$

The answer is 114 laps.