A bus covers a distance in 50 minutes,if it runs at 48 km/hr on an average speed. The speed at which the bus must run to reduce the time of journey to 40 minutes will be
A) 40 km/hr
B) 60 km/hr
C) 50 km/hr
D) 30 km/hr
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distance = 48×50/60 = 40 km
so.speed for it to cover in 40 min will be
speed = 40/(40/60) = 60 km/hr
so.speed for it to cover in 40 min will be
speed = 40/(40/60) = 60 km/hr
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