Question

Vinay, George, Nikhil and Rohit start running on a circular track from the same point at the same time. They take 20, 30, 60 and 30 minutes respectively to complete one lap. How many times will they all meet together in 120 minutes?

Answer 1

Answer:

2 times

Step-by-step explanation:

first we see for vinay, he takes 20 minutes to complete one lap so he completes laps at 20,40,60,80,100 and finally at 120 minutes.  Secondly, George takes 30 minutes to complete one lap sp he complete laps at 30,60,90 and 120 minutes. Thirdly, Nikhil takes 60 minutes to complete one lap so he completes laps at 60 and 120 minutes and lastly, Rohit is the same time as george so he completes laps at 30, 60,90 and 120 minutes. We have to find out the times they completed laps at the same time. We can see everyone completed a lap at 60 minutes and 120 minutes which is thus 2 times. I hope this helps you;)