1. A bus moves at a speed of 84 km/hr after repairing and moves at a speed of 56 km/hr before repairing. It covers 2x distance in 8 hours after repairing. How much time (in hours) will it take to cover x distance before repairing
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By: anil on 05 May 2019 02.07 am
Speed of bus after repairing = 84 km/hr Distance covered in 8 hours after repairing = $$2x$$ km Using, speed = distance/time => $$84=frac{2x}{8}$$ => $$x=84 imes4=336$$ km Speed of bus before repairing = 56 km/hr Now, time taken (in hours) to cover 336 km before repairing = $$frac{336}{56}=6$$ => Ans - (C)
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