Question

Train A leaves a station traveling at 32 km/h. Two hours later, train B leaves the same station traveling in the same direction at 52 km/h. How long does it take train B to catch up to train A?

Answer 1

No. Of hours after passenger train passed the station x:
52x = 32(x + 2) 
13x = 8(x + 2) 
13x = 8x + 16 
5x = 16 
x = 16/5 or 3 1/5

Answer:
3 1/5 hours OR 3 hrs 12 min

Hope this helps!