by selling 8 dozens pencil , a shopkeeper gains the selling price of one dozen pencils .find the gain percent?
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Answer:
if he sell 8 dozen and gain the sp of 1 dozen
let cost of each pencil 1
8 dozen =96piece
96piece=96 rupees
cp =sp-profit
=96-12(because he gain cost of One dozen)
=84
cp=84
proft%=profit/cp *100
=12/84 *100
=1/7 * 1000
=100/7
=14.29%(estimation)
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