# If the ratio of the cost price and the sale price of an article be 5 : 6, the perecentage of gain is â€“

 [ A ]    25% [ B ]    20% [ C ]    18% [ D ]    15%
 Answer : Option B Explanation : Cost price : Selling price = 5 : 6 Gain percentage = $6-5\over5$ Ã— 100 = 20%