A shopkeeper marks an article 40% above the cost price and allows a discount of 10%. What is his profit percentage?

Question: A shopkeeper marks an article 40% above the cost price and allows a discount of 10%. What is his profit percentage?

Answer:
Cost Price 100 Taka
Then Mark Price = 140, (40% above the cost price)

10% discount
If marked price is 100 then discount is 10 taka
If marked price is 1 then discount is 10/100 taka
If marked price is 140 then discount is 140/10= 14 taka

Selling Price = 140 - 14 = 126,
As the Cost Price = 100
Then, the Profit percentage is = 26%