Question

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

Answer 1

let he buys 60 lemons (lcm of 12 & 5)
cp=rs 125{(25/12)×60}
sp=rs 144{(12/5)×60}
therefore gain=sp-cp=144-125=19
gain percent =19/125×100=19×4/5
76/5 percent

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%