The marked price of a radio is 20% more than its cost price. If a discount of 10% is given on the marked price, the profit percent is:

Question: The marked price of a radio is 20% more than its cost price. If a discount of 10% is given on the marked price, the profit percent is:

Solution:
Let,
Cost price = Tk.100

Market price = 100 + 20% of 100
= 100 + (100 × 20/100)
= Tk. 120

Now,
Selling price = 120 - 10% of 120
= 120 - (120 × 10)/100
= Tk. 108

Profit = 108 - 100 = Tk. 8
∴ Profit % = (8 × 100)/100
= 8%