The selling price of 8 articles is same as the cost price of 10 articles. What is profit % ?

Answer: Option A

Selling price of 8 articles = Cost price of 10 articles
8 Selling price = 10 Cost price
$$\begin{array}{rl}& \frac{\text{Selling price}}{\text{Cost price}}=\frac{10}{8}\\ & \text{Profit percentage}\\ & =\frac{2}{8}\times 100=25\%\end{array}$$