Question

A mail carrier can deliver to 36 houses in 30 minutes. Mark wants to determine how many houses the carrier can deliver mail to in 7.5 minutes at this rate. He thinks that to find the answer, he should do the following.​

Answer 1

9

Explanation:

Answer 2

9 houses

Explanation:

36 houses = (x) houses

30 min 7.5 min.

cross multiply:

30x = 36 (7.5)

x = 270 / 30

x = 9