A.40 kmph

B.50 kmph

C.60 kmph

D.80 kmph

E.None of these

2) The ratio of the length of train A to B is 4: 5 and the speed of the train A to B is 3: 4. If train A crosses Train B running in same direction in 81 seconds and train A also crosses a pole in 12 seconds, then find the speed of train B?

A.50 kmph

B.60 kmph

C.80 kmph

D.Cannot be determined

E.None of these

3) Train A crosses a platform of length 300 m in 24 seconds but the same train crosses a man in 8 seconds. Find the length of train?

A.250 m

B.300 m

C.150 m

D.200 m

E.None of these

4) A train crosses 300 m long tunnel in 36 seconds and the same train crosses a pole in 18 seconds. What is the length of the train?

A.200 m

B.300 m

C.250 m

D.Cannot be determined

E.None of these

5) Train A crosses Train B running in opposite direction at the speed of 60 kmph in 6 seconds and crosses a pole in 8 seconds. If the length of the train B is 100 m longer than that of train A, the find the length of train A?

A.200 m

B.400 m

C.300 m

D.Cannot be determined

E.None of these

Answers :

1) Answer: C

Length of the train = x

Speed of train = y

x + 400 = y * 5/18 * 42

3x + 1200 = 35y

x = (y + 20) * 5/18 * 13.5

2x = 7.5y + 150

2 * ((35y – 1200)/3) = 7.5y + 150

70y – 2400 = 22.5y + 450

47.5y = 2850

y = 60 km/hr

2) Answer: D

Length of train A = 4x

Length of train B = 5x

Speed of train A = 3y

Speed of train B = 4y

9x = (4y – 3y) * 5/18 * 81

2x = y * 5

4x = 3y * 5/18 * 12

4x = 10y

2x = 5y

We cannot find the answer.

3) Answer: C

The speed is equal. So,

(T.L + 300) / 24 = T.L / 8

T.L + 300 = 3T.L

2T.L = 300

T.L = 150

The length of train = 150 m

4) Answer: B

Distance = Speed * Time

Length of the train = x

Speed of train = y

x + 300 = y * 5/18 * 36

x + 300 = 10y

x = y * 5/18 * 18

x = 5y

x + 300 = 2x

x = 300 m

5) Answer: D

Length of train A = x

Length of train B = x + 100

Speed of train A = y

2x + 100 = (y + 60) * 5/18 * 6

6x + 300 = 5y + 300

6x = 5y

x = y * 5/18 * 8

We cannot be find the answer.