Ramu marked his bicycle at 800. He sold it without offering any discount. The price at which he bought it was 500. Find his profit percentage.
Sonu bought a bicycle for Rs 3,750 and spent Rs 250 on its repairs. He sold it for Rs 4,400. Find his loss or profit percentage.
A salesman calculated his profit on the marked price and finds it to be 30%. He forgets the fact that he gave a discount of 20%. What is his actual profit percentage?