The total population of a town is 50,000. The number of males and females increases by 10% and 15% respectively and consequently the population of the town becomes 56,000. What was the number of males in the town?
Answer & explanation
Correct answer: option 2
Total Population "P" = 50000
M+F = 50000 ........(1)
if Males increased by 10% and females increased by 15%
1.1M + 1.15F = 56000 ........(2)
Multiply (1) by 1.1,
⇒1.1M + 1.1F = 55000
From (1) and (2)
0.05F = 1000
F = 20000
M = 50000-20000 = 30000
The correct answer is Option (2) → 30,000