If selling price of an article is 8/5 times of its cost price, the profit percent on it is = ?

Answer: Option D

According to the question,
$$\begin{array}{rl}& \text{Selling price}\\ & =\frac{8}{5}\times \text{Cost price}\\ & \frac{\text{Selling price}}{\text{Cost price}}=\frac{8}{5}\}\text{3 gain}\\ & \text{Gain}\%=\frac{3}{5}\times 100=60\%\end{array}$$