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SAHIL

· started a discussion

· 1 Months ago

Wrong answer (Question: 257114.0 )

in same direction we subtract speeds .so the right answer must be 9.

Question:

A person is running with a uniform speed of 15 km/h. A train is standing on the platform. Person crosses the train in 24 sec. Length of second train is two times to this train. If both trains are moving in same direction then first train crosses the second train in 60 sec. If speeds are in the ratio 7 : 5 then find the speed of second train?

Options:
A)

7.5 km/h

B)

5 km/h

C)

10.4 km/h

D)

7 km/h

E)

None of these

Solution:

Ans: (a)

  

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