Give Mr the answer of question 8th and 9th .

$$\begin{gathered} Dear Student \\ 8) \\ principle,P = Rs 1200 \\ Rate, R =? \\ Amount = Rs 1600 \\ Interest , I = A-P = 1600-1200 =Rs 400 \\ T\hspace{0.17em}=6 years \\ I= \frac{PRT}{100} \\ R = \frac{I\times 100}{P\times T} = \frac{400\times 100}{1200\times 6} = \frac{50}{9}=5.55\% \end{gathered}$$

Kindly ask the remaining question in a separate thread


Regards