Step-by-step explanation:
Hey there!
It is said we need to find the unit rate.
What we can do is apply Unitary Method.
3 minutes = 42 push ups
1 minute = [tex]\sf{\bf{\dfrac{42}{3}}}[/tex]
So, 12 push ups per minute is the unit rate.
In 5 minutes, he will do 12×5 = 60 push ups!
Hope it helps :)
