Question

The population in the village is 5500. If the number of females increases by 20 % and the number of males increases by 11 %, the population becomes 6330. Find the number of females in the village

Answer 1

Let the population of females be x.

the population of males = 5500 - x

according to the question,

111(5500-x)/100 + 120x/100 = 6330

or, 111(5500-x) + 120x = 633000

or, 610500 - 111x + 120x = 633000

or, 9x = 633000 - 610500

or, x = 22500/9

or, x = 2500

Number of female population is 2500.