Question

Joe swam at the rate of 4.5 miles per hour. Joseph swam at the rate of 1 12 of a mile per minute. Who was swimming faster? By how many miles per hour faster?

Answer 1

Joseph;

85.5 miles per hour.

Explanation:

We need to put their speeds in the same unit.

Joe swam at the rate of 4.5 miles per hour.

Joseph swam at the rate of 1 1/2 of a mile per minute (1.5 miles per minute). Let us convert this to miles per hour.

To do that, multiply it by 60 minutes:

1.5 * 60 = 90 miles per hour

Joseph swam faster, because his speed is greater than Joe's speed.

The difference in their speeds is:

90 - 4.5 = 85.5 miles per hour

Joseph swam 85.5 miles per hour faster than Joe.