A train overtakes two persons who are walking in the same direction i…

Question

A train overtakes two persons who are walking in the same direction in which the train is going, at the rate of 2 kmph and 4 kmph and passes them completely in 9 and 10 seconds respectively. The length of the train is:

Accepted Answer

Option B. 50 m. Answer & Solution Answer: Option B Solution: & 2\,kmph = ( 2 × 518 )\, m/sec & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = 5/9\, m/sec & 4\,kmph = ( 4 × 518 )\, m/sec & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = 109\, m/sec & Let\, the\, length\, of\, the\, trai…