A, B and C start together from the same place to walk round a circular path of length 12km. A walks at the rate of 6 km/h, B 3 km/h and C 3/2 km/h. They will meet together at the starting place at the end of-

Question: A, B and C start together from the same place to walk round a circular path of length 12km. A walks at the rate of 6 km/h, B 3 km/h and C 3/2 km/h. They will meet together at the starting place at the end of-

Solution:
We know,
Time = Distance/speed

Time taken to complete the revolution
A = 12/6 = 2 hours
B = 12/3 = 4 hours
C = 12 × (2/3) = 8 hours

Now, required time = LCM of 2, 4, and 8
= 8 hours