pens are bought at 12 for a rupee and sold at 9 for a rupee. find the gain%.
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Answer:
1/12 is C.P of 1pen
1/9 S.P of 1 pen
Profit% = [s.p-c.p]/ c.p *100 = [1/9-1/12]/1/12 * 100
= [1/36]/1/12 * 100 = 1/3 * 100= 33.33%
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