This week, there is a 20% discount on the truck, which means that its price will be 20% lower than its usual price of $20,000. If $20,000 is the regular price, then its sale price must be 80% of $20,000, which is $16,000. Thus, Bob would be saving $4,000 by taking advantage of the discount.

To find the discount, you must simply find 20% of $1200, the television set's original price.

20% of $1200 is $240

Now subtract that number from 1200

With a 15% discount, the car must be priced at 85% of its original price (100% minus the 15% discount). Since the car is originally priced at $18,000, the sale price must be 85% of $18,000. To find 85% of $18,000 you must convert it to its decimal equivalent (0.85) and multiply it by $18,000: to get a solution of 15,300.

Let us say for the sake of simplicity that the hat costs $100.00 before discount. Then a 30% discount means that the discount is 30% of $100, or $30, and the new price is $70. Then the employee gets a discount of 15% of the $70, or  ; she will pay .

She ends up paying 59.5% of the original purchase price; that is, she gets a net discount of 40.5%.

Let us say for the sake of simplicity that the hat costs $100.00 before discount. Then a 20% discount means that the discount is 20% of $100, or $20, and the new price is $80. Then the employee gets a discount of 10% of the $80, or  ; she will pay .

She ends up paying 72% of the original purchase price; that is, she gets a net discount of 28%.

Let us say for the sake of simplicity that the perfume costs $100.00 before discount. Then a 40% discount means that the discount is 40% of $100, or $40, and the new price is $60. Then the employee gets a discount of 25% of the $60, or  ; she will pay .

She ends up paying 45% of the original purchase price; that is, she gets a net discount of 55%.

There are two ways to do this problem.  The easiest way is to realize that we can represent two subsequent increases by saying, "After the markup, it is 120% of the original price and then the post-tax cost is 106% of that price."  This can be represented as two consecutive multiplications:

The more difficult way would be first to multiply $20 by 0.20, getting $4.  Adding this to $20, we have $24 for the "tag price."  Now, you will have to multiply $24 by 0.06 to get the amount of tax, which would be $1.44. Then, adding this to $24, you get $25.44, which you could have gotten much more quickly using the method shown above.

The original price of the television set is $800. Taking off 20% of the price, the television set is priced at $640: . With the additional 10% off from the coupon, the price becomes $576: .

The sale price of something is determined by the following formula

Where  represents the sale price,  is the percentage of the original price (in decimal form), and  represents the original price.

In this problem, we are given that the sale price of the computer is $650 , which is 70% of the original price. In decimal form, this percentage is written as 0.70. We are to find the original price. Plug in the values

Solve for  by dividing both sides by 0.70

So the original price of the computer is $928.57.

With a 20% discount, the sale price of the coat will be 80% (100%-20%=80%)  of the original price.  The sale price of something is normally calculated as

Where  is the sale price,  is the percent of the original price, and  is the original price. Given that the original price of the coat is $250 and knowing that the sale price is at 80% (or 0.80) of the original price, the sale price is calculated as

So the sale price of the coat is $200.