A dishonest dealer professes to sell goods at the cost price but uses a weight of 750 grams per kg, what is his percent?
Answers:
A) 25 %  B) 33 %  C) 29 %  D) 55 %  E) 45 %

Rationale: "750 - - - 250 100 - - - ? = > 33.33 % answer : b"
Answer: B