GRE percentages / discount question The following is a practice question from a GRE preparation book. A case of $100$ candy bars is sold at a discount of $\$0.36$ per bar. **Quantity A:** the discount per case **Quantity B:** 36% (a) A is greater (b) B is greater (C) The two quantities are equal (d) The relationship cannot be determined from the information given * * * My approach: Quantity B is 36%, which is simply 0.36 Quantity A is 0.36 * 100 = 36 Therefore A > B. However the answer I'm given is D. Where have I made a mistake?

The discount per case means the price after discount. However, the discount per case is the discounted amount divided by the total amount. Since only the discounted amount is known ($36), you cannot find the discount per case. Per case indicates that you know how much the case costs in the first place.