Asked by khushal305 | 13th May, 2009, 07:40: PM
We know that Speed = Distance/ Time
Now let say the speed of the train is x km/hr and speed of the bus is y km/hr.
According to the question, Roohi takes 4 hours if she travels 60 km by the train and rest by bus
4 = 60/x + 240/y
also, If she travels 100 km by train and rest by bus, she takes 4 hours and 10 minutes.
4 hours and 10 minutes = 4 + 1/6 = 25/6 hrs
Therefore, 25/6 = 100/x + 200/y
Now take 1/x =u and 1/y = v solve the two equations u and v
and then sunstitute to get x and y.
Answered by | 14th May, 2009, 11:14: AM
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