Multiple Choice Questions

A train 110 m long is travelling at a speed of 58 kmph The time in which it will pass a passerby wal...........

Quantitative Aptitude (CSC) Time & distance

A train 110 m long is travelling at a speed of 58 kmph. The time in which it will pass a passerby walking at 4 kmph in the same direction is

6 seconds

7 1/2 seconds

7 1/3 seconds

8 seconds

None of the above/More than one of the above

7 1/3 seconds

Length of the train = 110 m

Speed of the train = 58 kmph

Speed of the passerby = 4 kmph

Concept used:

Time travel to pass a passerby = Length of the train / Relative Speed

Calculation:Time to pass a passerby = Length of the train / Relative Speed

Relative speed = 58 - 4 = 54 kmph

= 54 × (5/18) = 15 m/sec

Time to pass the passerby = 110/15 = 7 ^1/3seconds

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