Fabiola walks at a constant pace of 1.5 m/s and takes 15 minutes to get to school. Faraj walks at 1.6 m/s and takes 20 minutes to get to school.
What is the difference between the distances they walked?

Step-by-step explanation:

First, we must know that this exercise is about uniform motion, so, the speed does not change during the walking of Fabiola nor Faraj.

Considering the units V = speed (m/s) , S = space (m) and t = time (s), we must transform the minutes in seconds by multiplying minutes by 60.

So, Fabiola takes 15x60 = 900s to get to school and Faraj takes 20x60 = 1200s to get to school.

Then, we have:

V= ΔS / ΔT.

For Fabiola, V = 1.5 m/s and ΔT = 900s. Then, ΔS = 900x1.5 = 1350m.

For Faraj, V = 1.6 m/s and ΔT = 1200s. Then, ΔS = 1200*1.6 = 1920m.

So, 1920 - 1350 = 570m.