What is the principal amount if the compound interest at 5% per annum results in a total of Rs.441 after 2 years?

Explanation

The amount after 2 years is given by A = P(1 + r/100)^2 = 441, where r = 5%. Thus, 441 = P(21/20)^2 = P(441/400). Solving for P gives P = 400.