Question

A custodian can clean 2 classrooms in 12 minutes . At this rate , how many classrooms can a custodian clean in 1 hour​

Answer 1

10 classrooms

Explanation:

if one classroom is cleaned in 6 minutes

then 6 divided by 60 gives you 10

Answer 2

1 class = 6 minutes
60 minutes = 10 classes