Question

42. A, B and C run on a circular path of 12 km length at 3 km/hr, 5 km/hr
and 13 km/hr speeds respectively. If all of them start in the same direction
from the same point at the same time, after how many hours will all of them
meet first?​

Answer 1

Answer:

Time taken by A = 312 hours = 4 hours.

Time taken by B = 712 hours.

Time taken by C = 1312 hours.

A, B, C will meet again after an interval.

= L.C.M of ( 14, 7, 12 and 1312 ) hours.

= H.C.F of ( 7, 13 ) L.C.M of ( 4, 12, 12 ) = 112 hours.

= 12 hours.

Step-by-step explanation:

I HOPE YOU UNDERSTAND NOW.