Question

Seema, Meena and Reena start jogging around a circular stadium and complete one round in 54 seconds, 42 seconds and 63 seconds respectively. Approximately after how many minutes they will meet again at the starting point?

• A. 8
• B. 10
• C. 3
• D. 6
• E. 32

Answer 1

The correct option is D 6

L.C.M of $54,42and63=378seconds$
$\frac{378}{60}=6.3$ minutes $\approx 6$ minutes.