Direction : What should come in place of question mark (?) in the following questions ?

11) A goods train runs at the speed of 72 kmph and crosses a 250 m long
platform in 26 seconds. What is the length of the goods train?

A)230 m

B)240 m

C)260 m

D)270 m

Answer:
D

12) Two trains, each 100 m long, moving in opposite directions, cross each
other in 8 seconds. If one is moving twice as fast the other, then the
speed of the faster train is:

A)30 km/hr

B)45 km/hr

C)60 km/hr

D)75 km/hr

Answer:
C

13) Two trains 140 m and 160 m long run at the speed of 60 km/hr and 40
km/hr respectively in opposite directions on parallel tracks. The time
(in seconds) which they take to cross each other, is:

A)9

B)9.6

C)10

D)10.8

Answer:
D

14) A train 110 metres long is running with a speed of 60 kmph. In what time
will it pass a man who is running at 6 kmph in the direction opposite
to that in which the train is going?

A)5 sec

B)6 sec

C)7 sec

D)10 sec

Answer:
B

15) A train travelling at a speed of 75 mph enters a tunnel 3 miles long. The train is mile long. How long does it take for the train to pass through the
tunnel from the moment the front enters to the moment the rear emerges?