Question

a trader marks his goods 40 ℅ above the cost price. he sells them at a discount of 20℅. what is his loss or gain percentage.

Answer 1

let cp=100
sp=140
discount= 140-20%of140=112
profit=12%

Answer 2

Hey,sup!

As per the question,

Let the cost price be 100x
So marked price= 100x(1+40/100)=140x.

Discount= 20%.
Selling price=140x(1-20/100)= 112x.

Profit= 112x-110x=12x.
Profit%=12x/100x ×100 = 12%.

Hope it helps.

we can also do this using net percentage formula,
Profit=40%=+40%.
discount=20%=-20%.
so nett%= +40-20-(40×20/100).
=20-8=+12% ( plus represent Profit).

hope you understand.