Question

Piper can run 3 laps in 8 minutes. Walker can run 10 laps in 25 minutes. Sophie can run 1 lap in 3 minutes. Who is the slowest runner?

Answer 1

Sophie is the slowest runner.

Explanation:

We are given the various constant of proportionally s.

3:8, 10:25, & 1:3

Simplify each one by finding a least common factor, LCF, for the first side of such, and multiply the number that would be needed to get to such on both sides.

Thus, 30 laps in 80 seconds , 30 laps in 75 seconds , and 30 laps in 90 seconds.

As seen here, 30:90 is lowest, so Sophie is the slowest runner.

Hope this helped!

~Penny

Answer 2

Sophie

Explanation:

For each runner, divide their time running by the laps they ran.

Piper: 8÷3≈2.7

Walker: 25÷10=2.5

Sophie: 3÷1=3

Sophie takes the longest time to run one lap, she is the slowest.