Question

A vendor buys lemons at rs25 per dozen and sells them at the rate of 5 for rs12 . Find his gain or loss persent

Answer 1

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

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

Answer 2

It is given that a vendor buys lemon at rupees 25 per dozen.

So, 12 lemons cost ₹25

Therefore, 1 lemon would cost ₹25/12

Now,

SP of 5 lemons=₹12

So, SP of 1 lemon=₹12/5

So, here SP>CP, which means that there is a gain/profit.

Now, gain=SP-CP

=₹(12/5-25/12)

=₹19/60

Now, gain%=Gain/CP×100

=19/60/25/12×100

=76/5%

=15.2%