A merchant marks goods up by 80% and then offers a discount on the marked price. The profit that the merchant makes after offering the discount is 35%. What % discount did the merchant offer?
Choose the correct choice.
A) 20 %	B) 25 %	C) 30 %	D) 35 %	E) 40 %

Rationale: "let p be the original price of the goods and let x be the rate after the markup . ( 1.8 p ) * x = 1.35 p x = 1.35 / 1.8 = 0.75 which is a discount of 25 % . the answer is b ."
Answer: B