Question

:) There are 18 animals in the field. Some are horses and some are geese. There are 56 legs in all.

How many of each animal are in the field?

Answer 1

Let number of horses be x, number of geese be y
x+y=18
4x+ 2y = 56
Substituting in Equation 1 into 2,
4x + 2y - 2(x+y) = 56-2(18)
2x = 20
x = 10
when x= 10, y= 8