Question

Ramesh has some cows and some parrots in his shed. The total number of legs is 130 and the total number of heads is 40. Find the number of cows in his shed.

Answer 1

Step-by-step explanation:

Let cows be x or parrots y

4x + 2y = 130

x + y = 40 or 2x + 2y = 80

after subtraction

2x = 50

x = 25

cow no. 25

Answer 2

Answer:

x=25

Step-by-step explanation:

No. of cows = x

No. of parrots = y

Legs of a 1 cow = 4×1

Legs of x cows = 4x

legs of parrots = 2x( by the above eg. )

Now, from question

4x+2y = 130

2x+y = 65 -----(i)

now head of x cows = x

now head of y parrots = y

now from question

x+y=40----(ii)

after eliminating we get

x= 65-40

x= 25

No. of cows in shed is 25

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