65
Q:

A cow was standing on a bridge, 5m away from the middle of the bridge. A train was coming towards the bridge from the ends nearest to the cow. Seeing this cow ran towards the the train and managed to escape when the train was 2m away from bridge. If it had run in the opposite direction, it would hit by the train 2m before the end of the bridge. What is the lenght of the bridge in meters assuming the speed of the train is 4 times that of cow ?

A) 22 mts B) 28 mts
C) 32 mts D) 34 mts

Answer:   C) 32 mts



Explanation:

let 'b' be the Length of bridge from cow to the near end of the bridge and 'a' be the distance of the train from the bridge.
'x' be speed of cow => '4x' speed of train
Then the total length of the bridge 2b + 10.
(a-2)/4x = b/x
=> a-2 = 4b........(1)
Now if it had run in opposite direction
(a+2b+10-2)/4x = (b+10-2)/x
=> a - 2b = 24......(2)
Solving (1) and (2)
b = 11 ,
Therefore length of the bridge is 2 x 11 + 10 = 32mts.

Q:

Study the given pattern carefully and select the number that can replace the question mark (?) in it.

 

A) 45 B) 55
C) 40 D) 50
 
Answer & Explanation Answer: A) 45

Explanation:
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1 26
Q:

How many triangles are there in the given figure?

 

A) 25 B) 24
C) 27 D) 26
 
Answer & Explanation Answer: A) 25

Explanation:
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0 43
Q:

Study the given pattern carefully and select the number that can replace the question mark(?) in it.

 

 

A) 83 B) 71
C) 79 D) 81
 
Answer & Explanation Answer: D) 81

Explanation:
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0 131
Q:

Study the given pattern carefully and select the number that can replace the question mark (?) in it.

 

 

A) 111 B) 113
C) 95 D) 77
 
Answer & Explanation Answer: D) 77

Explanation:
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0 74
Q:

In a certain a group of men and horses, the total number of legs is 14 more than twice the number of heads. How many horses are there in the group?

 

A) 11 B) 7
C) 9 D) 5
 
Answer & Explanation Answer: B) 7

Explanation:
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1 89
Q:

How many triangles are there in the given figure?

 

 

A) 25 B) 22
C) 16 D) 28
 
Answer & Explanation Answer: A) 25

Explanation:
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0 50
Q:

Study the given pattern carefully and select the number that can replace the question mark (?) in it.

 

 

A) 92 B) 98
C) 88 D) 82
 
Answer & Explanation Answer: C) 88

Explanation:
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1 55
Q:

Select the option in which the numbers are related in the same way as are the numbers in the given set.


(14, 18, 277)

 

A) (20,22, 521) B) (12, 32, 320)
C) (18, 16, 485) D) (24, 20, 576)
 
Answer & Explanation Answer: A) (20,22, 521)

Explanation:
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1 297