A man can row upstream at 12 km/hr and downstream at 18 km/hr. The man's rowing speed in still water is

• 15 km/hr

• 5 km/hr

• 3 km/hr

• 3 km/hr

A car takes 5 hours to cover 100 km distance at a particular speed whereas another car takes 3 hours to reach a particular distance at the same speed. Find the distance.

• 40 km

• 60 km

• 70 km

• 70 km

The time taken by a train 160 m long, running at 72 km/hr, in crossing an electric pole is

• 8 sec

• 9 sec

• 6 sec

• 6 sec

A gun is fired at a distance of 1.7 km from Ram and he hears the sound after 25 seconds. The speed of sound (in m/sec) is

• 60

• 62

• 64

• 64

A moving train passes a platform 50 m long in 14 sec and a lamp post in 10 sec. The speed of the train (in km/h) is

• 24

• 36

• 40

• 40

16.

A car travels from A to B with 40 Km/h and returns from B to A with 60 Km/h. Its average speed during the whole journey is

• 48 km/h

• 50 km/h

• 45 km/h

• 45 km/h

A bus travels 150 Km in 3 hours and then travel next 2 hours at 60 Km/hr. Then the average speed of the bus will be

• 55 km/hr

• 54 km/hr

• 50 km/hr

• 50 km/hr

A man can cover a certain distance in 3 hours 36 minutes if he walks at the rate of 5 Km/hr. If he covers the same distance on cycle at the rate of 24 Km/hr, then the time taken by him in minutes is

• 40

• 45

• 50

• 50

Due to inclement weather, an air plane reduced its speed by 300 km/ hr, and reached the destination of 1200 km late by 2hrs. Then the schedule duration of the flight was.

• 1 hour

• 1.5 hour

• 2 hour

• 2 hour

Three runners A, B and C run a race, with runner A finishing 12 meters ahead of runner B and 18 meters ahead of runner C, while runner B finishes 8 meters ahead of runner C. Each runner travels the entire distance at a constant speed. The length of the race is

• 36 metres

• 48 metres

• 60 metres

• 60 metres