Question

Two trains start at the same time from two stations 180 km apart and move towards each other at 40 km/h and 50 km/h respectively. After how much time will they meet?

• A. 1.5 hours
• B. 2 hours
• C. 2.5 hours
• D. 3 hours

Hint:

For approaching bodies, add the speeds.

Answer 1

The Correct Option is B

Together the trains close $90$ km of gap every hour. To close $180$ km takes $\dfrac{180}{90} = 2$ hours.