The population of village is 1,00,000. The rate of increase is 10% per annum. Find the population at the start of the third year?

Explanation:-

100000==10%↑(1^st year)==>110000==10%↑(2^nd year)==>121000
Population at starting of 3^rd year = 121000.

[By using net percentage change method, we have saved our self from cumber some formulas on population which is based on compound interest].