A distance of 600 km is to be covered using both Train & Bus. If first 120 km are covered by train and rest by Bus, it takes 8 hr in all. However if the train is used for 80 km more, it takes 20 min more for the entire journey. What is the speed of train?

Correct answer marked below

40 kmh

45 kmh

50 kmph

60 kmph

Correct

72 kmph

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What this question tests

Your application of distance = rate × time to trains, boats, and commuters, including relative speed.

Mixing units (miles per hour vs. minutes) or averaging speeds — average speed is total distance over total time.