Question

A commuter train travels 50 kilometers in 33 minutes. What is its speed in kilometers per hour?

Answer 1

90.9 km/hr

Explanation:

Convert minutes into hours: 33/60 = 0.55

Speed=Distance/Time

Speed=50/0.55

90.9 km/hr

Answer 2

By using dimensional analysis, we can find the km/hr quickly

`(50km)/(33min) *(60min)/(1hr)=90.909090\approx90.91`

He travels at about 90.91km/hr