There are deer and peacocks in a zoo. By counting heads they are 80. The number of their legs is 200. How many peacocks are there?

Options

A. 20
B. 30
C. 50
D. 60

Answer

D

Explanation

Let the number of dear and peacocks in the zoo be D and P respectively.
According to the question
`D+P=80 " " ....(i)`
`4D + 2P = 200 `
or, `2D + P=100 " "...(ii)`
Subtracting (i) from (ii), we get
`D= 100 - 80 = 20 `
Putting `D = 20 ` in (i), we get
`20+ P = 80 `or, `P= 80 - 20 = 60 `
So, Required number of Peacocks in the zoo = 60.