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 4 km/h, B 3 km/h and C 3/2 km/h. They will meet together at the starting place at the end of:

  • 110 hours
  • 212 hours
  • 315 hours
  • 424 hours
Answer:- 1
Explanation:-

Solution:
Time taken to complete the revolution:
A→12/4 = 3 hours;
B→ 12/3 = 4hours;
C→12*2/3 = 8 hours;
Required time,
= LCM of 3, 4, 8.
= 24 hours.

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