A shopkeeper marks up his goods by 20% and then gives a discount of 20%. Besides he cheats both his supplier and customer by 100 grams i.e., he takes 1100 gram from his supplier and sells only 900 grams to his customer. What is his net profit percentage?

Options

A. `24.5%`
B. `17.33%`
C. `25%`
D. `32.5%`

Answer

To find the net profit percentage of the shopkeeper, we will follow these steps:

### Step 1: Determine the Cost Price (CP) and Selling Price (SP) after Markup and Discount
1. Let the Cost Price (CP) of the goods be \(100\) (for simplicity).
2. The shopkeeper marks up his goods by \(20\%\). Therefore, the Marked Price (MP) is:
\[ MP = CP + 20\% \text{ of } CP = 100 + 20 = 120 \]