Jane, Kyla, and Anthony have summer jobs in a resort. Their task is to fold guests' towels. Jane can fold 3 towels in 5 minutes. Kyla can fold 5 towels in 10 minutes, and Anthony can fold 7 towels in 20 minutes. If they all fold towels together, how many towels can they fold in one hour? Let's think first. Chain of thought:
There are 1 x 60 minutes = 60 minutes in 1 hour. There are 60 / 5 = 12 sets of 5 minutes in 1 hour. So, Jane can fold 3 x 12 = 36 towels in an hour. There are 60 / 10 = 6 sets of 10 minutes in 1 hour. So, Kyla can fold 5 x 6 = 30 towels in an hour. There are 60 / 20 = 3 sets of 20 minutes in 1 hour. So, Anthony can fold 7 x 3 = 21 towels in an hour. Therefore, the 3 of them can fold a total of 36 + 30 + 21 = 87 towels in 1 hour.
Therefore, the answer is 87.