It takes Marty 1 1/4 hours to get ready for school. If 1/5 of that time is used to shower, what fraction of an hour does it take him to shower?

1.25 * 0.2 * 60 = 0.25 = 1/4 hour

To find the fraction of an hour it takes Marty to shower, we first need to determine the total time it takes him to get ready for school (1 1/4 hours).

1 1/4 hours can be written as 5/4 hours.

Next, we need to calculate 1/5 of that total time to determine the time spent showering.

To find 1/5 of a value, we divide that value by 5.

So, (5/4) ÷ 5 = 1/4.

Therefore, Marty takes 1/4 of an hour (15 minutes) to shower.