Question

A farmer has some cows and some hens .If the number of total heads of animals is 30 and total number of legs is 80. find the number of hens and cows.​

Answer 1

Answer:

Let number of cows = x

number of hens = y

so, according to the question

x + y = 30

4x + 2y = 80 => 2x + y = 40

Solving above equations we get,

x = 10and y = 30

Hence, the number of Cows is 10