Question

The population of a town
increases every year by 4%. If
its present population is
50000, then after 2 years it will
be​

Answer 1

Here we can use the compound interest based formula,

Population after n years=P×[1+r100]n Population after 2 years=50000×[1+4100]2

Population after 2 years = 54080

Alternatively,

we can use, net percentage change graphic as well,

50,000------4%↑---→ 52,000---- 4%↑---→ 54,080.

Then, population after 2 years= 54,080.

In this calculation, we need to find 1% of 50,000 first, which is easily calculated by dividing 50,000 by 100.