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Question

A bus takes 5 hours more than a train to cover the distance of 900 km from Vardha to Pune. If speed of the train is 15 km/hr more than that of the bus, then what is the speed of bus per hour?

A
60 km
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B
75 km
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C
55 km
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D
45 km
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Solution

The correct option is C 45 km
Let the speed of bus be v km/hr.
Speed of train = (v+15) km/hr
TIme taken to cover 900 km distance by bus be t=900v hr
TIme taken to cover 900 km distance by train be t'=900(v+15) hr
tt=5
900v900(v+15)=5
solving this we get speed of bus , v=45km/hr

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