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.
Cost price of radio = Rs.225
Overhead expenses = Rs. 15
Total cost = cost price + overhead expenses = 225+15 = Rs. 240
Selling price of radio = Rs.300
Gain = 300 – 240 = Rs. 60
= 
5