A motorcyclist rides for 1.5 hours at a speed of 80 km/h. Then she

encounters traffic and rides 20 km at an average speed of 25 km/h.

What total distance did she cover?

Total distance covered by motorcyclist in her entire journey = 140 km

Explanation:

A motorcyclist rides for 1.5 hours at a speed of 80 km/h

So distance covered = Speed * time = 80*1.5 = 120 km

Then she encounters traffic and rides 20 km at an average speed of 25 km/h.

So distance covered when she travels at 25 km/h = 20 km

Total distance covered by motorcyclist = 120+20 = 140 km