Question

Two trains 190 metres and 160 metres in length are running towards each other on parallel tracks, one at the rate 70 km/hr and another at 56 km/hr. In how many seconds will they be clear of each other from the moment they meet?

A 12 seconds Correct Answer Incorrect Answer
B 10 seconds Correct Answer Incorrect Answer
C 15 seconds Correct Answer Incorrect Answer
D 6 seconds Correct Answer Incorrect Answer

Solution

Required time = Sum of the lengths of trains / Relative speed Relative speed = 70 + 56 = 126 kmph = (126 × 5)/18 = 35 m/sec Required time = (190 + 160)/35 = 350/35 = 10 seconds

Practice Next
×
×