If the ratio of the cost price and the sale price of an article be 5 : 6, the perecentage of gain is –



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

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