1. Punit, Vinit and Ajit begin to jog around a stadium. They complete their revolutions in 45 seconds, 54 seconds and 36 seconds respectively. After how many seconds will they be together at the starting point ?
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By: anil on 05 May 2019 01.39 am
Time taken by Punit, Vinit and Ajit to be together at the starting point = L.C.M. of 45, 54 and 36 => 45 = $$3^2 imes 5$$ 54 = $$2 imes 3^3$$ 36 = $$2^2 imes 3^2$$ => L.C.M. = $$2^2 imes 3^3 imes 5 = 540$$ seconds
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