Question

Jonah teaches pet-training classes at the Happy Tails doggy daycare. Yesterday, he taught 2 tricks to a group of dogs during a 30-minute class. Jonah decided to create a longer class lasting 75 minutes.
If he teaches tricks at the same rate, how many tricks will Jonah teach during the 75-minute class?

Answer 1

He taught 2 tricks in 30 minutes, a rate of 2/30 = 1/15 trick per minute. In 75 minutes he would teach (1/15)*75 = 5 tricks.