Excluding stoppages, the speed of a bus is 54 km/hr and including stoppages it is 45 km/hr. For how many minutes does the bus stop per hour?

• 8

• 10

• 12

• 12

A man walks from one place to another at a speed of 5 km/hr and returns to the starting place at a speed of 3 km/hr. His average speed for the whole journey is

• 4.5 km/hr

• 4 km/hr

• 4.25 km/hr

• 4.25 km/hr

If Mohan goes to his office from his house at a speed of 16 km/hr, he reaches the office 5 minutes late. If he goes at a speed of 20 km/hr, he reaches 10 minutes earlier than the office time. The distance of his office from his house is

• 22 km

• 20 km

• 18 km

• 16 km

4.

Two persons ride towards each other from two places 55km apart, one riding at 12 km/h and the other at 10 km/h. When will they be 11 km apart?

• 2h and 30 min

• 1h and 30 min

• 2h

• 2h

A train 150 m long passes a telegraphic post in 12 seconds. Find the speed of the train.

• 50 km/h

• 12.5 km/h

• 25 km/h

• 25 km/h

A train leaves station A at 5:00 am and reaches station B at 9:00 am on the same day. Another train leaves station B at 7:00 am and reaches station A at 10:30 am on the same day. The time at which the two trains cross one another is

• 8:00 am

• 8:26 am

• 7:56 am

• 7:56 am

The speed of a boat in still water is 6km/hr and the speed of the stream is 1.5 km/h. A man rows to a place at a distance of 22.5 km and comes back to the starting point. The total time taken by him is

• 10 h

• 4 h 10 min

• 6h 10 min

• 8 h

A gun is fired at a distance of 1.34 km from Geeta. She hears the sound after 4 s. The speed at which sound travels is

• 335 m/s

• 330 m/s

• 300 m/s

• 300 m/s

If I walk at 5km/h, I miss a train by 7 min. However, if I walk at 6 km/h I reach the station 5 min before the departure of the train. The distance between my house and the station is

• 6.5 km

• 7 km

• 6 km

• 6 km

A gun is fired at a distance of 6.64 km away from Ram, He hears the sound 20 seconds later. Then the speed of sound is

• 664 m/sec

• 664 km/sec

• 332 m/sec

• 332 m/sec