4
Q:

K is 50% faster than L. If L starts at 9 A.M. and K starts at 10 A.M. L travels at a speed of 50 km/hr. If L and K are 300 kms apart, The time when they meet when they travel in opposite direction is ?

A) 12 pm B) 1 pm
C) 11 am D) 11:30 am

Answer:   A) 12 pm



Explanation:

let 't' be the time after which they met since L starts.

Given K is 50% faster than L

50 t + 1.5*50(t-1) = 300

50 t +75 t = 300 + 75

t = 375 / 125 = 3 hrs past the time that L starts

So they meet at (9 + 3)hrs = 12:00 noon.

Q:

A car covers 25 km at a uniform speed. If the speed had been 8 knv/h more, it would have taken 10 hours less for the same journey. What is the speed of the car (in km/h)?

 

A) 4 B) 3
C) 2.5 D) 2
 
Answer & Explanation Answer: D) 2

Explanation:
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0 21
Q:

The ratio between the speeds of two trains is 5 : 7. If the first train covers 300 km in 3 hours, then the speed (in km/h) of the second train is:

 

A) 100 B) 150
C) 140 D) 120
 
Answer & Explanation Answer: C) 140

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0 139
Q:

The ratio between the speeds of two trains is 2 : 5. If the first train runs 350 km in 5 h, then the difference between the speeds (in km/h) of both the trains is:

 

A) 350 B) 105
C) 165 D) 180
 
Answer & Explanation Answer: B) 105

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2 395
Q:

Given that the lengths of the paths of a ball thrown with different speeds by two boy sare the same, if they take 0.6 seconds and 1 second respectively to cover the said length, what is the average speed of travel for the first throw, if the same for the second is 96 km/h?

A) 160 km/h B) 200 km/h
C) 150 km/h D) 100 km/h
 
Answer & Explanation Answer: A) 160 km/h

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1 406
Q:

A man divided his journey into three parts of distances of 18 km, 20 km and 27 km. He travelled the distances at the speeds of 6 km/h, 5 km/h and 9 kn/h,respectively. What was his average speed during the entire journey?

 

A) 6.5 km/h B) 4.5 km/h
C) 7.5 km/h D) 5.5 km/h
 
Answer & Explanation Answer: A) 6.5 km/h

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2 650
Q:

The distance between two railway stations is 1176 km. To cover this distance, an express train takes 5 hours less than a passenger train while the average speed of the passenger train is 70 km/h less than that of the express train. The time taken by the passenger train to complete the travel is:

 

A) 12 hours B) 23 hours
C) 17 hours D) 18 hours
 
Answer & Explanation Answer: A) 12 hours

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2 742
Q:

The distance between the places H and O is D units. The average speed that gets a person from H to O in a stipulated time is S units. He takes 20 minutes more time than usual if he travels at 60 km/h, and reaches 44 minutes early if he travels at 75 km/h. The sum of the numerical values of D and S is:

 

A) 376 B) 358
C) 344 D) 384
 
Answer & Explanation Answer: D) 384

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0 481
Q:

A train that is running at the speed of 72 km/h crossesan electric pole in 36 seconds. The length of the train (in metres) is:

 

A) 720 m B) 460 m
C) 360 m D) 620 m
 
Answer & Explanation Answer: A) 720 m

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1 515