Question

Half of a herd of deer are grazing in the field and three fourths of the remaining are playing nearby. The rest 9 are drinking water from the pond. Find the number of deer in the herd.

Answer 1

Let total no.of deer = x
half of herd =x/2
3/4 of remaining half herd =(x/2)(3/4)
                                          =3x/8
remaining deer=9
x=(x/2)+(3x/8)+9
x=(4x+3x+72)/8
8x=7x+72
8x-7x=72
x=72
∴total no.of deers are 72.