A train which has 390 m long, is running 45 kmph. In what time will it cross a person moving at 9 kmph in same direction ?
36
24 sec
26 sec
39 sec
Explanation:
Time taken to cross a moving person = length of train/ relative speed
Time taken = 390/((45-9) (5/18)
= 390/ 36*(5/18)
= 390/10
= 39 sec
Time taken to cross a moving person = length of train/ relative speed
Time taken = 390/((45-9) (5/18)
= 390/ 36*(5/18)
= 390/10
= 39 sec