A shopkeeper fixes the marked price of an item 30% above its cost price. The percentage of discount allowed to gain 8% is
Pick one
A) 15.92 %
B) 16.92 %
C) 17.92 %
D) 18.92 %
E) none of these

Rationale: "explanation : let the cost price = rs 100 then , marked price = rs 130 required gain = 8 % , so selling price = rs 108 discount = 130 - 108 = 22 discount % = ( 22 / 130 ) * 100 = 16.92 % option b"
Answer: B