Question

Three bodies A, B and C start moving around a circular track of length 60m from the
same point simultaneously in the same direction at speeds of 3 m/s, 5 m/s and 9 m/s respectively.
When will they meet for the first time after they started moving?
A. 30 seconds
B. 60 seconds
C. 15 seconds
D. 10 seconds
E. 25 seconds

Answer 1

60 seconds because relative speed in same direction is difference of their speed