Translate shopkeeper language into CP, SP, MP, and discount carefully.
What to focus on
- Identify whether the question is about actual profit or listed discount.
- Map each price to the correct symbol.
Quick formula / idea
- Words → symbol → formula
A trader buys at 400, marks at 500, and gives 10% discount. SP = 450, profit = 50.
Practice prompts
- A watch marked 900 is sold at 10% discount. If CP = 720, find profit%.
- A loss of 15% on CP 800 gives what SP?