Two friends, ‘A’ and ‘B’ started running along a circular track in the same direction at the same time at 35 m/s and 21 m/s, respectively. If the length of the circular track is 3,500 metres, then find the time after the start at which they will meet each other for the first time.
Show answer & explanation
Correct answer: B
Explanation
Given:
A's speed = 35 m/s
B's speed = 21 m/s
Length of circular path = 3500 m
By the formula:
Time = Path length / Relative speed
Relative speed = 35 − 21 = 14 m/s
Meeting time = 3500 / 14 = 250 seconds