Question

There is a circular path around a sports field. Priya takes 35 minutes to drive one round of the field, while Ravish takes 28 minutes for the same. Suppose they both started at the same point and at the

same time, and go in the same direction. (i) After how many times will they meet again at the starting point?

(ii) Which mathematical concept is used in this problem.​

Answer 1

(i) after 140 min they will meet again.(in about 4-5 rounds)

(ii) LCM

HOPE IT HELPS :)