1.

Three friends J, K and Ljog around a circular stadium and complete one round in 12, 18 and 20 seconds respectively. In how many minutes will all the three meet again at the starting point1). 52). 83). 124). 3

Answer»

Solution

All the three friends will meet at the starting POINT again after X SECONDS, such that X is the LCM of the times taken by J, K and L to complete one round.

=> LCM of 12, 18 and 20 = 180 seconds = 3 minutes.

Hence 3 minutes is the answer.



Discussion

No Comment Found