Question

Pens are bought at 12 for a rupee and sold at 9 for a rupee. Find the gain percent​

Answer 1

Ok

CP Of One Pen = 1/12

SP Of One Pen = 1/9

Gain = 1/9-1/12  = 4-3/36 = 1/36

Gain% = Gain/CP * 100

=> 1/36 * 12 * 100  

=>33.33%