Question

In what time will Rs 3600 amount to Rs 4410 at 9% per annum simple interest?

Answer 1

$$\begin{gathered} \begin{array}{l}\text{P}=\text{Rs}\text{. 36}00,\text{A}=\text{Rs}\text{. 441}0,\text{R}=\text{9}\%\\ \text{S}.\text{I.}=\text{A}-\text{P}\\ =\text{441}0-\text{36}00\\ =\text{Rs}\text{. 81}0\\ \therefore \text{T=}\frac{\text{S}\text{.I.×100}}{\text{P×R}}\end{array} \\ \text{=}\frac{\text{810×100}}{\text{3600×9}} \\ \text{=}\frac{\text{90}}{\text{36}} \\ \text{=2}\frac{\text{1}}{\text{2}}\text{years} \end{gathered}$$