This extension is more about learning how to do a skill than proving you are a master - PLEASE don't concern yourself with your percent correct - you will get the same credit (a whopping 25 points) for trying as you will for being perfect!

This extension will show you how to take a total cost and figure out the cost of an item. First you will learn (practice) removing the sales tax. Then we will use the same skill to see how much the regular price of an item is.
Clicking "Help" will not count as a wrong answer so try the problem, then click help to see how the problem is done.
To keep this simple we will use a flat 5% sales tax.

Jacob charged $27.72 to his father's debit card for a pair of jeans that were sold with a 40% discount. What was the cost of the discounted jeans before a 5% tax?

Ray charged $48.72 to his father's debit card for an MP3 player that was sold with a 20% discount. What was the cost of the discounted MP3 player before a 5% tax?

Siobhan charged $116.97 to her mother's debit card for a printer that was sold with a 20% discount. What was the cost of the discounted printer before a 5% tax?

Bradley's family spent $85.55 for dinner with an 18% tip. What was the cost of the dinner (with tax) before the 18% tip?

Now we will use the skill to bust the costs further! First you will remove the tax as you did in the earlier problems, then you will remove the discount to find the original price of the goods!
Remember that choosing "Help" will not count against you so use the "Help" button until you are ready to fly on your own!

Jacob charged $27.72 to his father's debit card for a pair of jeans that were sold with a 40% discount. What was the original cost of the jeans before a 5% tax and the 40% discount?

Ray charged $48.72 to his father's debit card for an MP3 player that was sold with a 20% discount. What was the original cost of the MP3 player before a 5% tax and the 20% discount?

Siobhan charged $116.97 to her mother's debit card for a printer that was sold with a 20% discount. What was the cost of the discounted printer before a 5% tax?

Bradley's family spent $85.55 for dinner with an 18% tip. What was the cost of the dinner (with tax) before the 18% tip?