A retailer buys a radio for Rs 225. His overhead expenses are Rs 30. He sellis the radio for Rs 300. The profit percent of the retailer is Choose the correct choice from the following options
A) 10 %
B) 50 %
C) 25 %
D) 17.6 %
E) none of these

Rationale: "explanation : cost price = ( 225 + 30 ) = 255 sell price = 300 gain = ( 45 / 255 ) * 100 = 17.6 % . answer : d"
Answer: D