18
Q:

Two boys starting from the same place walk at a rate of 5kmph and 5.5kmph respectively. What time will they take to be 8.5km apart, if they walk in the same direction?

A) 15 hours B) 16 hours
C) 17 hours D) 18 hours

Answer:   C) 17 hours



Explanation:

In this type of questions we need to get the relative speed between them,
The relative speed of the boys = 5.5kmph – 5kmph
= 0.5 kmph

Distance between them is 8.5 km
Time = Distance/Speed
Time= 8.5km / 0.5 kmph = 17 hrs

Q:

Two cyclists X and Y start at the same time from place A and go towards place B at a speed of 6 km/h and 8 km/h,respectively. Despite stopping for 15 minutes during the journey, Y reaches 10 minutes earlier than X. The distance between the places A and B is:

 

A) 6 km B) 16.5 km
C) 8 km D) 10km
 
Answer & Explanation Answer: D) 10km

Explanation:
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6 1397
Q:

A train crosses a platform 180 m long in 60 sec at a speed of 72 km/h. The time taken by the train to cross an electric pole is:

 

A) 51 sec B) 0.51 min
C) 5.1 sec D) 5.1 min
 
Answer & Explanation Answer: A) 51 sec

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5 817
Q:

An express train moves with a speed of 144 km/hr. Calculate the distance covered by train in 15 minutes.

 

A) 35 km B) 32 km
C) 33 km D) 36 km
 
Answer & Explanation Answer: D) 36 km

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0 729
Q:

Rahim started a journey 15 minutes late, and as a result, had to drive at a speed of 54 km/h instead of 45 km/h to reach his destination on time. What is the distance covered during the course of the journey?

 

A) 90 km B) 67.5 km
C) 13.5 km D) 75.5 km
 
Answer & Explanation Answer: B) 67.5 km

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4 1080
Q:

The distance between place X and Y is 720 km. An express train leaves place X at 5:00 p.m. and runs at a speed of 45 km/hr. The train stops on the way for 45 minutes.
At what time (in a.m.) the train reaches at place Y?

A) 1:45 B) 9:45
C) 7:15 D) 12:15
 
Answer & Explanation Answer: B) 9:45

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4 584
Q:

Driving @ 48kmhrBarun reached the destination 2 minutes ahead of time. If he drove @ 42kmhrhe would have been 1 minute late. What is the distance that Barun drove?

 

A) 17.6 km B) 17.2 km
C) 16.4 km D) 16.8 km
 
Answer & Explanation Answer: D) 16.8 km

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1 1084
Q:

Shamim had to travel 420 km in 8 hours. If he travelled at an average speed of 60 km/h and took two breaks in between, the shorter break being one-third the duration of the longer, how many minutes was the longer break for?

 

A) 45 B) 30
C) 40 D) 35
 
Answer & Explanation Answer: A) 45

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0 635
Q:

Amit travelled a distance of 50 km in 9 hours. He travelled partly on foot at 5 km/h and partly by bicycle at 10 km/h. The distance travelled on the bicycle is:

 

A) 11 km B) 10 km
C) 13 km D)  12 km
 
Answer & Explanation Answer: B) 10 km

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1 795