A shopkeeper sold an book offering a discount of 5% and earned a profit of 23.5%. What would have been the percentage of profit earned if no discount was offered? Choices:
A) 140  B) 120  C) 130  D) 110  E) 150

Rationale: c 130 % let c . p . be $ 100 . then , s . p . = $ 123.50 let marked price be $ x . then , 95 / 100 x = 123.50 x = 12350 / 95 = $ 130 now , s . p . = $ 130 , c . p . = $ 100 profit % = 30 % .
Answer: C