Aptitude - Simplification - Discussion
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Read more:"You cannot shake hands with a clenched fist."
- Indira Gandhi
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A man has some hens and cows. If the number of heads be 48 and the number of feet equals 140, then the number of hens will be:
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22 | [B]. |
23 | | [C]. |
24 | [D]. |
26 |
Answer: Option E
Explanation:
Let the number of hens be x and the number of cows be y.
Then, x + y = 48 .... (i)
and 2x + 4y = 140  x + 2y = 70 .... (ii)
Solving (i) and (ii) we get: x = 26, y = 22.
 The required answer = 26.
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Jyothi said:
(Wed, Feb 16, 2011 06:56:56 AM)
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| Any short cut? |
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Srinu said:
(Sun, Dec 4, 2011 11:03:15 PM)
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| Can anyone tell me, how 2x and 4y are comming? |
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Deepi said:
(Wed, Feb 1, 2012 03:56:47 PM)
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| Hens have 2 legs and cows have 4 legs. So in-order to calculate number of hens and cows take as 2x+4y. |
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