### After allowing a discount of 11.11%, a trader still makes a gain of 14.28%. At how many percent above the cost price does he mark on his goods?

A. 28.56% B. 35% C. 22.22% D. None of these Answer: Option A
Let the CP be Rs. 100, Then SP = 100 + 14.28% of 100 = Rs. 114.28 (As Profit = 14.28%) This profit is arrived after giving discount of 11.11% on the marked price. Let the marked price be x $\begin{array}{l}\mathrm{X}-11.11\%\text{ of }X=114.28\\ \mathrm{X}\times\frac{100-11.11}{100}=114.28\\ \mathrm{X}=\frac{114.28\times100}{8889}=\text{ Rs. }128.56\end{array}$ which is more than 28.56% of CP.