Question

A farmer saw some chickens and pigs in a field. He counted 30 heads and 84 legs. Determine exactly how many chickens and pigs

he saw?

Answer 1

51

Explanation:

Given parameters:

Number of heads = 30 heads

Number of legs = 84 legs

Unknown:

Number of chickens and pigs = ?

Solution:

Since a chicken has one head, the number of chicken is the same as the number of heads;

Number of chicken = 30

A pig has 4 legs,

Number of pigs =
`(84)/(4)` = 21pigs

Total number of pigs and chickens = 30chickens + 21 pigs = 51