Question

Two people run around circular track and take 42 sec and 30 sec to make one complete round. If they start together after how much amount of time will they meet again in the same place ?

Answer 1

Answer: 3 minute 30 second

Step-by-step explanation:

first people take 42 sec to complete the track.

second people take 30 sec to complete the track.

they will meet again after,

L.C.M. of (42 sec, 30 sec) = 210 sec = 3 minute 30 second

so after 3 minute 30 second they meet again in the same place.