Question

Interest problem

Answer 1

\(\normalsize \color{black}{\begin{align}
&\text{A sum of money kept at simple interest double it self in 5 years .} \hspace{.33em}\\~\\
& \text{What is the rate of interest ?} \hspace{.33em}\\~\\

\end{align}}\)

Answer 2

Just need to solve \(r\) from : \[x + 5*r*x = 2x\]

Answer 3

Alternatively, you need to get 1/5th of the money every year.

Answer 4

thanks

Answer 5

Np