Question

A, B and C start running at the same speed on a circular track from their respective points. A
completes a full circle in 110 seconds, B in 130 seconds and C in 150 seconds. If they all
start from the same point, when will they all next be at the starting point?
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Answer 1

Answer:

THEY WILL MEET AFTER 21450 SECONDS

Step-by-step explanation:

TIME TAKEN BY A=110 SECONDS

TIME TAKEN BY B=130 SECONDS

TIME TAKEN BY C=150 SECONDS

TO FIND THE NEXT MEETING POINT, WE HAVE TO FIND THE LCM OF 110,130,150

SO,

LCM OF 110,130,150=21450 SECONDS

SO, THEY WILL MEET AFTER AT THE SAME POINT AFTER 21540 SECONDS

I HOPE YOU UNDERSTOOD