1. The ratio of the speed of P, Q and R is 10 : 12 : 15 respectively. What is the ratio of the time taken by P, Q and R respectively to cover the same distance?
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By: anil on 05 May 2019 02.27 am
Speed is inversely proportional to time. => Ratio of time taken = $$frac{1}{10}:frac{1}{12}:frac{1}{15}$$ L.C.M.(10,12,15) = 60 = $$frac{60}{10}:frac{60}{12}:frac{60}{15}$$ = $$6:5:4$$ => Ans - (C)
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