Question

a vendor buys lemon at rupees 25 per dozen sells them at the rate of 5 for rupees 12 find his gain or loss percent

Answer 1

Cost price of 12 lemons 25 rs
so cost price of 5 lemons =(25/12)*5= 125/12 rs
selling price of 5 lemons is 12 rs
so here gain =12-125/12=19/12 Rs
so gain percent = [(19/12)/(125/12)]*100=76/5%=15.20%

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%