100+ Problems on Trains Aptitude Questions and Answers - 4

 Question: 6

A train 240 m long passed a pole in 24 seconds. How long will it take to pass a platform 650 m long?

(A) 65 sec

(B) 79 sec

(C) 89 sec

(D) 99 sec

View Answer

Ans: C

Speed = (

240

24

)m/sec = 10 m/sec.

∴ Required time = (

240+650

10

)sec = 89 sec.

Question: 7

A train 300 m long crossed a platform 900 m long in 1 minutes 12 seconds. The speed of the train (in km/hr) is

(A) 40

(B) 50

(C) 60

(D) 70

View Answer

Ans: C

Total distance covered = (300 + 900) m = 1200 m

Time taken = 1 minute 12 sec = 72 sec.

∴ Speed of the train = (

1200

72

) m/sec

                              = (

1200

72

×

18

5

)km/hr = 60 km/hr.

Question: 8

If a 200 m long train crosses a platform of the same length as that of the train in 20 seconds, then the speed of the train is

(A) 50 km/hr

(B) 60 km/hr

(C) 70 km/hr

(D) 72 km/hr

View Answer

Ans: D

Total distance covered = (200 + 200) m = 400 m

Time taken = 20 sec.

∴ Speed of the train = (

400

20

) m/sec

                             = (20×

18

5

) km/hr = 72 km/hr.

Question: 9

A speed of 14 metres per second is the same as

(A) 28 km/hr

(B) 50.4 km/hr

(C) 70 km/hr

(D) 74.2 km/hr

View Answer

Ans: B

14 m/sec = (14×

18

5

)km/hr = 50.4 km/hr.

Question: 10

A train of length 150 metres takes 40.5 seconds to cross a tunnel of length 300 metres. What is the speed of the train in km/hr?

(A) 13.33

(B) 26.67

(C) 39.16

(D) 40

View Answer

Ans: D

Speed = (

150+300

40.5

)m/sec.

= (

450

40.5

×

18

5

)km/hr = 40 km/hr.