Question

Cole ran 3 miles in 27 minutes . Carson ran 2 miles in 20 minutes. Aaravind ran 5 miles in 35 minutes if each student ran at a constant rate , who is the fastest runner?

Answer 1

Aaravind is the fastest runner.

Explanation:

To calculate their running speed, divide miles by minutes.

Cole:
`3 -: 27 = 0.bar11`

Cole runs 3 miles every 27 minutes.
This is equivalent to 0.11 miles per 1 minute .

Carson:
`2 -: 20 = 0.1`

Carson runs 2 miles every 20 minutes.
This is equivalent to 0.1 miles per 1 minute .

Aaravind:
`5 -: 35 = 0.142..`

Aaravind runs 5 miles every 35 minutes.
This is equivalent to 0.14 miles per 1 minute .

`0.1 < 0.11 < 0.14`
Aaravind runs the most miles per minute, so he is the fastest.