A vendor buys lemons at 25rs per dozen and sells them at the Rate of 5for 12rs.find his gain or loss per cent?Solution :
cost price of 12 lemons ( in Rupees) = 25
therefore , cost price of one lemon(in Rupees) = 25 / 12
hence cost price of 5 lemons = 5*25/12
Selling price of 5 lemons (in Rupees) = 12
Since the S.P of 5 lemons is more than C.P. hence the vendor has gain.
Gain % = S.P - C.P/C.P*100
=12 - 10.416/10.416*100
Gain % = 15.2
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