The cost price of a radio is Rs.1800 and it was sold for Rs.1430, find the loss %?  Choose the correct choice from the following: A) 18 % B) 20.5 % C) 30 % D) 45 % E) 12 %

Rationale: "1800 - - - - 370 100 - - - - ? = > 20.5 % answer : b"
Answer: B