Question

a trader earn 20% profit on selling the radio with 20% discount if the cost price of the radio is 1440 the printed rate is

Answer 1

Solution :-

Let the Market Price of the product is MP. 
Let the Original Cost Price of the product is CP. 

Selling Price (Discounted Price) = 100%of MP - 20%MP 
= 80% of MP. ---------------- (1) 

Profit made by selling at discounted price = 20% of CP -------------- (2) 

Apply the formula: 

Profit = Selling Price - Original Cost Price 
=> 20% of CP = 80% of MP - 100% CP 
=> MP = 120CP/80 = 3/2 (CP) 

Now if Product is sold without any discount, then, 

Profit = Selling Price (without discount) - Original Cost Price 
= Market Price - Original Cost Price 
= MP - CP 
= 3/2 CP - CP 
= 1/2 CP 
= 50% of CP

( Cp=1440)

1440×100/50

Sp = 2880 Ans