In a circular race of 950 m length, A and B start with speeds of 18 km/h and 36 km/h, respectively, in the same direction, at the same time, from the same point. After how many seconds will they meet for the first time at the starting point?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 190.
Speed of A = 5 m/s, B = 10 m/s
Track length = 950 m
Time taken by A to complete one round = 950/5 = 190 seconds
Time taken by B to complete one round = 950/10 = 95 seconds
Time to meet at starting point = LCM of (190, and 95) = 190 seconds