Question

In 2012, registered foreigners were 4% of the total population. From 2000 to 2012, the total population increased by 55% and the number of registered foreigners increased by 670%. Hence, from 2000 to 2012 the number of unregistered foreigners increased by

• A. 1.265 million
• B. 0.265 Million
• C. 2.265 million
• D. 1.045 million

Answer 1

The correct option is A

1.265 million

In 2012, total registered foreigners = 2.7 million.

Therefore total population = $\left(\frac{2.7}{4}\right)\times 100$= 67.5 million

So, total population in 2000 = $\frac{67.5}{1.55}$= 43.5 million

Total registered foreigners in 2000 = $\frac{2.7}{7.7}$= 0.35 million

In 2012, total registered foreigners = 4% and total foreigners = 6%

Total unregistered foreigners = 2%

Total unregistered population in 2012 = 67.5$\times$0.02 = 1.35 million.

Total unregistered population in 2000 = 43.5$\times$0.01-0.35 = 1.35 million.

Hence the required increase = 1.35 - 0.085 = 1.265 million.