Question:
Fill in the blanks:
(i) $A=P\left(1+\frac{\ldots \ldots \ldots}{100}\right)^{n}$.
(ii) (Amount) - (Principal) = .........
(iii) If the value of a machine is Rs P and it depreciates at R% per annum, then its value after 2 years is .........
(iv) If the population P of a town increases at R% per annum, then its population after 5 years is .........
Solution:
(i) $A=P\left(1+\frac{R}{100}\right)^{n}$
(ii) Compound interest
(iii) $A=P\left(1-\frac{R}{100}\right)^{2}$, where $A$ is the value of the machine after 2 years
(iv) $A=P\left(1+\frac{R}{100}\right)^{5}$, where $A$ is the population of the town after 5 years