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:

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 meter per second is

A) 60 B) 62
C) 64 D) 68
 
Answer & Explanation Answer: D) 68

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Q:

A man travelled a distance of 60 km in 7 hours. He travelled partly on foot @ 6 km/hr and partly on bicycle @ 12 km/hr. What is the distance (in kms) travelled on foot?

A) 15 B) 9
C) 48 D) 24
 
Answer & Explanation Answer: D) 24

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Q:

Travelling at 4/5th of his usual speed, a man is 15 minutes late. What is his usual time to cover the same distance?

A) 15 min B) 1 hr
C) 75 min D) 45 min
 
Answer & Explanation Answer: B) 1 hr

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Q:

A car travels a certain distance at 70 km/h and comes back at 30 km/h. Find the average speed for total journey.

A) 42 km/hr B) 50 km/hr
C) 34 km/hr D) 58 km/hr
 
Answer & Explanation Answer: A) 42 km/hr

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Q:

A person clapped his hands near a cliff and heard echo after 6 s. The distance of the cliff from the personis: [take v = 346 m/s]

A) 1038 m B) 1083 m
C) 2076 m D) 2706 m
 
Answer & Explanation Answer: A) 1038 m

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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:

A missile travels at 1206 km/h. How many metres does it travel in one second?

A) 355 metres B) 318 metres
C) 302 metres D) 335 metres
 
Answer & Explanation Answer: D) 335 metres

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Q:

A man travels 50 km at speed 25 km/h and next 40 km at 20 km/h and there after travel 90km at 15 km/h. His average speed is

A) 18 B) 25
C) 20 D) 15
 
Answer & Explanation Answer: A) 18

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