Shashi sells two articles for Rs. 5,000 each with no loss and no profit in the overall transaction. If one article is sold at $$16\frac{2}{3}\% $$  loss, then other is sold at a profit of:

$$16\frac{2}{3}\% = \frac{{ - 1}}{6}$$
\[\begin{array}{*{20}{c}} {}&{\text{I}}&{{\text{II}}} \\ {{\text{Cost price}} \to }&6&4 \\ {{\text{Loss/Profit}} \to }&{ - 1}&{ + 1} \\ {{\text{Selling price}} \to }&5&5 \end{array}\]
$${\text{Profit }}\% = \frac{1}{4} \times 100 = 25\% $$