A passenger train of length 60 m travels at a speed of 80 km / hr. Another freight train , the ratio of times taken by the train to completely cross the freight train when :(i) they are moving in direction , and (ii) in the opposite directions is :

Options

A. `(5)/(2)`
B. `(11)/(5)`
C. `(3)/(2)`
D. `(25)/(11)`

Answer

B

Explanation

`t_(1)` (moving is same direction) `=(x)/(v-4)=(x)/(50)`
`t_(2)` (moving in opposite direction) `=(x)/(v+4)=(x)/(110)`
`(t_1)/(t_2)=(11)/(5)`.