Cost price of an article is ₹500 and selling price is ₹650. Find the profit %.

💡 Profit% = (SP − CP) / CP × 100.

An article was sold at a loss of 10% for ₹450. Find its cost price.

💡 SP = CP × (100 − Loss%) / 100.

A trader marks his goods 40% above cost price and offers a 25% discount on the marked price. What is his profit %?

💡 Effective SP = CP × 1.4 × 0.75. Profit% = (SP/CP − 1) × 100.