Question
Humsafar express leaves Howrah station at a certain
time. After 2 hours, Vande Bharat leaves the same station and travels in the same direction at a speed of 150 km/hr. If Vande Bharat catches up to Humsafar in 18 hours, then what is the speed of Humsafar express?Solution
ATQ Distance travelled by Vande Bharat in 18 hours = 18 × 150 = 2700 km Speed of Humsafar express = 2700/(18 + 2) = 2700/20 = 135 km/h
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