Question

the population of a village was 8400 if the males and female arre increased by 9% and 5% then population will become 8936 after 1 year find the difference between number of males and females at present

Answer 1

Step-by-step explanation:

let no. females = x, no. of males =y

x+y = 8400 ----A

when males increased by 9% be y1

y1 = y×(1+9%)= y(1+0.09) =1.09y

when females increased by 5% be x1

x1 = x×(1+5%) = x(1+0.05) = 1.05x

x1+y1 = 8936

1.05x+1.09y = 8936 ----B

B-A =

0.05x+0.09y = 8936-8400 = 536

5x+9y = 53600 ---C

5A- C =

4y = 11600

y = 2900

x = 8400-2900 = 5500

difference between males and females

=5500-2900 =2600

= 2600