1.

Two trains A and B start from two places P and Q towards Q and P respectively . After passing each other they take 4 hours 48 minutes and 3 hours and 20 minutes to reach Q and P respectively . If the train from P is moving at 45 km/h then find the speed of other train .

Answer»

69 km/h
74km/h
54km/h
64 km/h

Solution :Speed of 2ND train = Speed of FIRST train `XX (sqrtT`ime taken by 1st train after meeting /`sqrtT`ime taken by 2nd train after meeting) = `sqrt(200 : 288) = 5 : 6` .
`implies r_(2) = 54`km/hr


Discussion

No Comment Found