8
Q:
A) 58 sec | B) 62 sec |
C) 60 sec | D) 50 sec |
Answer: D) 50 sec
Explanation:
Explanation:
The distance to be covered = Sum of their lengths = 200 + 300 = 500 m.
Relative speed = 72 -36 = 36 kmph = 36 x 5/18 = 10 mps.
Time required = d/s = 500/10 = 50 sec.