Question

Coach Jensen can do 90 push-ups in 5 minutes, what is her minute to pushups unit rate?

Answer 1

We can convert the "90 pushups in 5 minutes" rate to minutes per pushup by inverting "90 pushups in 5 minutes" and then reducing the result:

5 minutes

------------------ = 1/18 minute per pushup

90 pushups

Note that 1/18 minute per pushup is equivalent to 3 1/3 seconds per pushup.

Answer 2

90/5 is 18, so her pushup unit rate is 18 pushups per minute.