Two trains are moving at 45kmph and 70 kmph in opposite directions.

Two trains are moving at 45kmph and 70 kmph in opposite directions. Their lengths are 150 m and 100 m respectively. The time they will take to pass each other completely is?

Quiz

Answer/Solution

47/6 sec

Steps/Work

70 + 45 = 115 * 5/18 = 575/18 mps
D = 150 + 100 = 250 m
T = 250 * 18/575 = 15/2 = 47/6 sec
Answer:C