Memorise the standard formulas that connect CP, SP, MP, discount, and percentage.
What to focus on
- Keep CP as base in profit and loss percentage.
- Keep MP as base in discount percentage.
Quick formula / idea
- Profit% = (Profit / CP) × 100
- Discount% = (Discount / MP) × 100
MP = 1000, SP = 850, so discount = 150 and discount% = 15%.
Practice prompts
- Find discount% if MP = 640 and SP = 544.
- Find profit% if CP = 250 and SP = 300.