Aptitude - Simplification - Discussion
Discussion Forum : Simplification - General Questions (Q.No. 13)
13.
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:
Answer: Option
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.
Discussion:
67 comments Page 7 of 7.
Geet said:
8 years ago
Cows = L-2H/2.
=140-2*48/2 =44/2 =22,
Hens =48-22=26.
=140-2*48/2 =44/2 =22,
Hens =48-22=26.
Neha said:
8 years ago
Can anyone please tell me how this 140 is coming? I am confused.
Jony said:
8 years ago
140/4=35 cow head.
48-35=13 hens head.
13*2=26 two legs of hens.
Here is 26 shortcut.
48-35=13 hens head.
13*2=26 two legs of hens.
Here is 26 shortcut.
Pradeep said:
8 years ago
140\2.
=70-48=22, cows=22,
Total head=48-22=26.
=70-48=22, cows=22,
Total head=48-22=26.
Naveen said:
8 years ago
140/2=70-48=22, 48-22=26.
ASHIK.K.S said:
8 years ago
Applying L/2-h.
First step : L/2=140/2=70,
Second step :L/2-h=70-48=22(no.of cows),
Last step:no.of cows=22,
Total heads=48,
There fore,
The no.of hens=48-22=26.
First step : L/2=140/2=70,
Second step :L/2-h=70-48=22(no.of cows),
Last step:no.of cows=22,
Total heads=48,
There fore,
The no.of hens=48-22=26.
Prasad Mandati said:
8 years ago
Number of Cows = (Feet/2) -- Heads.
Number of Hens = Total heads --Number of Cows.
Number of Hens = Total heads --Number of Cows.
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