SSC CGL Model Paper 9

Discount 1 = 20%
Discount 2 = 30%
Effective discount = -20% - 30% + $\frac{20\times 30}{100}\%$
⇒ 44%Now he is also giving 2 products for every 8 products
⇒ He is giving 10 products in the marked of price of 8 products
⇒ Discount he is providing, discount $3\to \frac{2}{10}\times 100\Rightarrow 20\%$
Overall effective discount = $-44\%-20\%+\frac{44\times 20}{100}$
⇒ $-64\%+\frac{44}{5}=\frac{276}{5}\%$
⇒ if marked price = 500x
Selling price = (500 - 276) x = 224x ...(i)
Profit in overall transaction = 12%
⇒ If CP = 100x
SP = 112x
But SP from Equation (i) = 224x
⇒ CP will be 200x
Markup% $=\frac{500\mathit{x}-200\mathit{x}}{200\mathit{x}}\times 100\%=150\%$