Question

a vendor buys lemons at Rs 25 per dozen and sells them at the rate of 5 for Rs 12 . find its gain or loss percent

Answer 1

The profit is equal to the amount the lemons are sold for minus the amount the vendor paid for them. We will call the price in dollars. Therefore, we can write:

profit per lemon=($12/5)-($25/12)

profit per lemon=($19/60) or $.32 per lemon

The percentage gain or lost will be equal to [(profit per lemon)/(paid per lemon)]*100. Therefore, we can write:

percentage= ($19/60)/($25/12) *100= 15.2%

15.2% is the percent gained.

Answer 2

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
                                                             =125/12
                                                             =10.416
           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. 
Therefore , 
Gain %  =  S.P - C.P/C.P*100
             =12 - 10.416/10.416*100
       Gain %     = 15.2 

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