A retailer buys a cooler for Rs. 1200 and overhead expenses on it are Rs. 40. If he sells the cooler for Rs. 1550, determine his profit percent.
A retailer buys a radio for Rs. 225. His overhead expenses are Rs. 15. If he sells the radio for Rs. 300, determine his profit percent.
A retailer buys a per for Rs 335. He sells it for Rs 400. If he makes a profit of Rs 50, what are his overhead expenses?