A shopkeeper sold 15 articles at the cost price of 20 articles. Then find the profit% or lost%  Pick one:
A) 30 %
B) 31 %
C) 20 %
D) 33.33 %
E) 40 %

Rationale: "here 15 articles selling price = 20 articles cost price so the difference = 20 - 15 = 5 % of profit = 5 * 100 / 15 = 33.33 % correct option is d"
Answer: D