Question : The population of A town is 9000. If the number of females increases by 5% and the number of males by 7.5%, what will be the total population after the increase when the number of females is currently 3000?
Option 1: 9600
Option 2: 9200
Option 3: 10500
Option 4: 9540
Correct Answer: 9600
Solution :
Total number of population = 9000
Total number of females = 3000
Total number of males = 9000 – 3000 = 6000
Total population after the increase
= $3000 × \frac{105}{100} + 6000 × \frac{107.5}{100}$
= 3150 + 6450
= 9600
Hence, the correct answer is 9600.
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