Question

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

Simplify your answer and write it as a proper fraction, mixed number, or whole number.

Answer 1

Answer: He is mopping at a rate of 15 minutes per classroom or a ratio of 1 classroom/15 minutes

Step-by-step explanation: If he takes 5 minutes to mop 1/3 of a classroom, then to mop 1 whole classroom, he will take 5 x 3=15 minutes because 1/3 x 3 is 1 and 5 x 3 is 15.