Time and Distance Questions

FACTS  AND  FORMULAE  FOR  TIME  AND  DISTANCE

1.Speed = DistanceTime,  Time=DistanceSpeed, Distance= Speed×Time 

 

2. x km/hr = x×518 m/sec

 

3. x m/sec = x×185 km/hr

4. If the ratio of the speeds of A and B is a:b , then the ratio of the times taken by them to cover the same distance is or b : a

5. Suppose a man covers a certain distance at x km/ hr and an equal distance at y km/hr . Then, the average speed during the whole journey is 2xyx+ykm/hr.

Q:

Two cyclists P and Q cycle at 20 km/hr and 25 km/hr towards each other. What was the distance (in kms) between them when they started if they met after 56 minutes?

A) 36 B) 39
C) 42 D) 45
 
Answer & Explanation Answer: C) 42

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Q:

Rakesh goes on a trip on his motor­cycle and rides for 368 kms. If he rides for 5 hours at a speed of 49 km/hr, at what speed he travels for the remaining 3 hours of the journey?

A) 58 km/hr B) 41 km/hr
C) 54 km/hr D) 46 km/hr
 
Answer & Explanation Answer: B) 41 km/hr

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Q:

A spaceship travels at 810 km/hr. How many metres does it travel in 1/5th of a second?

A) 60 B) 45
C) 75 D) 90
 
Answer & Explanation Answer: B) 45

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Q:

A racing car going at an average speed of 108 km/hr takes 15 minutes to complete a lap on a racing track. By how much should it increase its speed (inkm/hr) to complete the lap in 12 minutes?

A) 24 B)  21
C) 27 D) 30
 
Answer & Explanation Answer: C) 27

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Q:

A bus runs at 50 kmph. If the speed is increased by 10 kmph, it will cover 20 km more in the same time. Find the actual distance covered?

A) 100 km B) 150 km
C) 200 km D) 250 km
 
Answer & Explanation Answer: A) 100 km

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Q:

What should be the average speed of a car to cover a distance of 189 km in 3.5 hours?

A) 15 m/s B) 54 m/s
C) 27 m/s D) 30 m/s
 
Answer & Explanation Answer: A) 15 m/s

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Q:

A bus travels 720 km in 20 hours. Calculate its average speed in meters/second.

A) 12 B) 15
C) 18 D) 10
 
Answer & Explanation Answer: D) 10

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Q:

A man travelled a distance of 61 km. in 9 hours , partly by walking at speed of 4 km / hr and partly on bicycle at speed of 9 km / hr. The distance covered by walking is

A) 16 Km B) 12 Km
C) 15 Km D) 17 Km
 
Answer & Explanation Answer: A) 16 Km

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