Freshers India

A man covered a certain distance at some speeHad he moved 3 kmph faster, he would have taken 40 minutes less. If he had moved 2 kmph slower, he would have taken 40 minutes more. The distance (in km) is:                        

The distance between two cities A and B is 330 Km. A train starts from A at 8 m. and travel towards B at 60 km/hr. Another train starts from B at 9 m and travels towards A at 75 Km/hr. At what time do they meet?                        

Two stations A and B are 110 km apart on a staright line. One train starts from A at 7 m. and travels towards B at 20 kmph. Another train starts from B at 8 m. and travels towards A at a speed of 25 kmph. At what time will they meet?                        

Walking at the rate of 4kmph a man cover certain distance in 2hr 45 min. Running at a speed of 16.5 kmph the man will cover the same distance in.                         

A train covers a distance in 50 min, if it runs at a speed of 48kmph on an average. The speed at which the train must run to reduce the time of journey to 40min will be.                         

Two towns are connected by railway. Can you find the distance between them?
I.The speed of the mail train is 12 km/hr more than that of an express train. II.A mail train takes 40 minutes less than an express train to cover the distance.