A train takes 3 hours to travel from place A to B at the speed of 60 km/h. The same train takes 2 hours to travel from B to C at 50% increased speed. What is the average speed of the train from place A to C?
Answer & explanation
Correct answer: option 4
From A to B ,
Distance = Speed × Time
= 60 × 3 = 180 km
From B to C ,
Speed = 60 + 50% of 60 = 90 km/h
Distance = Speed × Time
= 90 × 2 = 180 km
Total distance from A to C = 180 + 180 = 360 km
Average speed = \(\frac{360 }{5 }\) = 72 km/h