Question

Seema,Meena and Reena start jogging around a circular stadium and complete one round in 54sec,42sec and 63sec respectively approximately after how many minutes they will meet again at the sstarting point​

Answer 1

Step-by-step explanation:

to get answer we will lcm of 54,42,63

and we get=378

means they shall meet after 6min and 18sec

Answer 2

Step-by-step explanation:

Time they take to complete a round =

54,42,63sec

Lcm of 54,42,63

2 54,42,63

3 27,21,63

3 9,7,21

3 3,7,7

7 1,7,7

1,1,1

LCM = 2 * 3 * 3 *7=378

now convert it minutes

378 / 60 =51quoteint 18 remainder

So they will meet after 51 minutes 18 second at the starting point