In a certain year, the population of a certain town was 9000. If in the next year the population of males increases by 3% and that of the females by 8% and the total population increases to 9600, then what was the ratio of population of males and females in that given year?
Options.
A) 4 : 11  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, 3% of x + 8% of (9000 – x)   = (9600 – 9000 ) = 600   or 0.03x + 720 – 0.08x = 600   or 720 – 600 = 0.08x – 0.03x   or, 120 = 0.05x   x = 2400   Reqd ratio of population of males and females   2400/9000−2400=2400/6600=4:11   4 : 11nswer 4 : 11
<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 3% and that of the females by 8% and the total population increases to 9600, then what was the ratio of population of males and females in that given year?