Population of a village is 9600. if male are increasing at the rate of 8% and female are at the rate of 5% for 1 year the new population after 1 year become 10272. find the number of males.
Answers
Answered by
5
increase in population = 10272 - 9600
= 672
let male were x
therefore increase in male = 8% * ×
= 8x /100 = 2x / 25
female were = 9600 - x
increase in female = (9600 - x )*5%
= (9600 - x ) *5 / 100
= 9600 /20 - x/20
= 480 - x/20
total increase = 2x / 25 + 480 - x/20
40x -25x / 500 +480 = 672
15x / 500 = 672 - 480
15 x = 192 * 500
x = 192 * 500 / 15
x = 64 * 100
x = 6400
therefore male were 6400
= 672
let male were x
therefore increase in male = 8% * ×
= 8x /100 = 2x / 25
female were = 9600 - x
increase in female = (9600 - x )*5%
= (9600 - x ) *5 / 100
= 9600 /20 - x/20
= 480 - x/20
total increase = 2x / 25 + 480 - x/20
40x -25x / 500 +480 = 672
15x / 500 = 672 - 480
15 x = 192 * 500
x = 192 * 500 / 15
x = 64 * 100
x = 6400
therefore male were 6400
pravinsir:
mark it as brainliest if you think this will helpful
Similar questions