Question

If in a group of dogs and crow, the number of heads is 25 and the number of feet is 70

Answer 1

Let the number of dogs be 'x' and number of crow be 'y'

Then, according to the question

x + y = 25 -----------------(1)

4x + 2y = 70

⇒ 2x + y = 35 ------------(2)

Solving eq(1) and eq(2), we get

x = 10

putting x = 10 in eq(1), we get y = 15

∴ number of dogs(x) = 10 & number of crows(y) = 15