Question

Demetrius and Yosef are training for a race.

Demetrius ran at a constant speed of `7.5` miles per hour.

Yosef's progress is shown by the graph.

Answer 1

Yosef finished the mile in 9 minutes.

Distance = 1 mile

Demetrius' speed = 7.5 miles per hour

Demetrius' time = Distance/speed

= 8 minutes

Demetrius finished the mile first by taking 1 minute less than Yosef's finishing time.