In a certain year, the population of a certain town was 9000. If in the next year the population of males increases by 4% and that of the females by 9% and the total population increases to 9600, then what was the ratio of population of males and females in that given year? Pick one
A) 7 : 8	B) 5 : 4	C) 2 : 3	D) Data inadequate	E) None of these
Let the population of males = x; then the population of females = 9000 – x   Now, 4% of x + 9% of (9000 – x)   = (9600 – 9000 ) = 600   or 0.04x + 720 – 0.09x = 600   or 720 – 600 = 0.09x – 0.04x   or, 120 = 0.05x   x = 4200   Reqd ratio of population of males and females   4200/9000−4200=4200/4800=7:8   7 : 8nswer 7 : 8
<result>A</result>
In a certain year, the population of a certain town was 9000. If in the next year the population of males increases by 4% and that of the females by 9% and the total population increases to 9600, then what was the ratio of population of males and females in that given year?