Question

rina minu and sarita jog around a circular stadium. they complete their revolution in 40 second, 45 second and 50 second, respectively. after how many seconds will they be togeather at the started point?

Answer 1

They meet at start point after 1800 seconds(30 minutes)

Hope it helps.

Answer 2

I think after 1800seconds.....
Because LCM OF 40,45,50 IS 1800



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