Question

In what time will Rs 5600 amount to Rs 6720 at 8% per annum?

Answer 1

$$\begin{gathered} \begin{array}{l}\text{P}=\text{Rs}\text{. 56}00,\text{A}=\text{Rs}\text{. 672}0,\text{R}=\text{8}\%\\ \text{S}.\text{I.}=\text{A}-\text{P}\\ =\text{672}0-\text{56}00\\ =\text{Rs}\text{. 112}0\\ \text{T=}\frac{\text{S}\text{.I.×100}}{\text{P×R}}\end{array} \\ \text{=}\frac{\text{1120×100}}{\text{5600×8}} \\ \text{=}\frac{\text{1120}}{\text{448}} \\ \text{=2}\frac{\text{1}}{\text{2}}\text{years} \end{gathered}$$