A school janitor has mopped 1/3 of a classroom in 5 minutes. At what rate is he mopping?

Answer: 1/15 classrooms per minute

Step-by-step explanation:

Find the janitor's rate in classrooms per minute. Divide

1/3

of a classroom by 5 minutes.

To divide by 5, multiply by its reciprocal, 1/5

.

1/3 : 5 = 1/3 * 1/5 = 1/15

The janitor is mopping at a rate of 1/15 of a classroom per minute.

0.06 of the floor mopped per minute