**A person standing on a railway platform noticed that a train took 21 seconds to completely pass through the platform which was 84 m long and it took 9 seconds in passing him. The speed of the train was**

A] 25.2 km/hr.

B] 32.4 km/hr

C] 50.4 km/hr

D] 75.6 km/hr.

**A train moves past a telegraph post and a bridge 264 m long in 8 seconds and 20 seconds respectively. What is the speed of the train?**

A] 69.5 km/hr

B] 70 km/hr

C] 79 km/hr

D] 79.2 km/hr

**A train passes a man standing on a platform in 8 seconds and also crosses the platform which is 264 metres long in 20 seconds. The length of the train (in metres) is:**

A] 188

B] 176

C] 175

D] 96

**A train passes a 50 metres long platform in 14 seconds and a man standing on the platform in 10 seconds. The speed of the train is:**

A] 24 km/hr

B] 36 km/hr

C] 40 km/hr

D] 45 km/hr

**Two trains start from a certain place on two parallel tracks in the same directions. The speed of the trains are 45km/hr. and 40km/hr. respectively. The distance between the two trains after 45 minutes will be**

A] 2 km 500 m

B] 2 km 750 m

C] 3 km 750 m

D] 3 km 250 m