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Aptitude - Simplification - Discussion

Discussion Forum : Simplification - General Questions (Q.No. 13)
Simplification
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:
22
23
24
26
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 4 of 7.
Rakshnaa said:   7 years ago
(48-h)4 + 2h = 140.
-4h + 2h =140-192,
-2h=-52,
h = 26.
Ramandeep singh said:   7 years ago
Hi, Use the formula to get the answer.

No of 4 feet animals = Foots -(heads*2)/2.
Nambi sreekanth said:   7 years ago
Please, explain how the x value get as 26?
Lakshmi said:   7 years ago
There are some cows, bulls and hens in a group. One caretaker looks after 15 animals. The number of bulls is twice the number of cows if the number of head is less than the total number of feet is 186, how many caretakers are there?

Can anyone solve this?
Prasad Mandati said:   8 years ago
Number of Cows = (Feet/2) -- Heads.

Number of Hens = Total heads --Number of Cows.
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.
Naveen said:   8 years ago
140/2=70-48=22, 48-22=26.
Pradeep said:   8 years ago
140\2.
=70-48=22, cows=22,
Total head=48-22=26.
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.
Neha said:   8 years ago
Can anyone please tell me how this 140 is coming? I am confused.
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