Question

Two students raced their model cars down a track. The first car traveled
at 40 centimeters per second. The second car traveled at 45 centimeters
per second. If the cars started at the same time, how far apart were the
cars after 3 seconds?

Answer 1

The difference in speed is 45-30 = 5 centimeters per second.

5 centimeters per second x 3 seconds = 15 centimeters.

They were 15 centimeters apart