a bus covers a distance in 50 minutes if it runs at a speed of 48 km per hour on an average at what speed the bus must run
to reduce the time of journey to 40 mm
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Answer:
Step-by-step explanation:
Time = 50/60 hr = 5/6 hr
Speed = 48 mph
Distance = S*T = 48 * 5/6 = 40 km
New time will be 40 minutes so,
Time = 40/60 hr = 2/3 hr
Now we know,
Speed = Distance/Time
New speed = 40*3/2 kmph
= 60km/h
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