Question

Jackie ran fifty yard at an average speed of 21 feet per second. what was her average speed in feet per minute? a.1,260 b.7.560 c.1.75 d.0.35

Answer 1

A 1,260
use a calculator
21 times 60=___a_

Answer 2

1260

Explanation:

Given : Jackie ran fifty yard at an average speed of 21 feet per second.

To Find: what was her average speed in feet per minute?

Solution:

Speed of Jackie = 21 feet per second.

60 second = 1 minute

1 second =
`(1)/(60) minute`

Now we are supposed to convert the speed in feet per minute

Now , 21 feet per second =
`(21)/((1)/(60))`feet per minute

=
`1260` feet per minute

Hence her average speed in feet per minute is 1260 feet per minute

Thus Option A is correct.