SOLUTION: A Plasma TV has a list price of $2,400. The store receives a discount of 48% from the manufacturer. How much profit does the store make if they sell the TV at a 20% discount off li

Profit is the difference between "selling price" and "cost price" for the store.

"Cost price" is what the store pays the manufacturer.
"Selling price" is what the store sells it to the buyer.

List price = 2400

Since store gets a 48% discount, it pays only (100 - 48 = 52%) of the list price to the manufacturer. So cost price for the store = 

Store sells for a discount of 20% off list price, or (100 - 20 = 80%) of the list price. So the selling price for the store = 

So the profit for the store = 

Profit = $672

Hope you got it.

:)