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Discount Formula - YourTeacher.com - Pre Algebra Help

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Uploaded by on Apr 29, 2008

For a complete lesson on the discount formula, go to http://www.yourteacher.com - 1000+ online math lessons featuring a personal math teacher inside every lesson! In this lesson, students solve word problems using the "discount" formula, which states: original price x rate of discount = discount. Students also solve word problems using the "sale price" formula, which states: original price -- discount = sale price. For example: A tennis racket marked at $110.50 is on sale at 20% off. What is the discount? What is the sale price? Students also solve word problems using the "rate of discount" formula, which is the same as the percent decrease formula: amount of change/ original number. For example: An old video game is marked down from $48 to $18. What is the rate of discount?

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  • I love the sound of how the marker hits the board when she writes.

  • 110 AND 5 OWWWW TIMES TWO OOOOOOOOOOOOOW

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  • Thanks for taking a complex subject and making it easier to understand!

  • @TokenDocumentaries becuz its algebra

  • Omg ! Thank you soo much ! All of your videos I have watched helped me ! My teacher makes it soo complicated , and confusing , but you are like great ! Thanks again ! Now I understand how to do this crapp !

  • She...writes...too...slow.....­.

  • Thanks so much got an A+ on my test:D

  • Yes, smart. That's the answer! xD Lol

  • How Can I Learn Math In 240p

  • You know what sucks? You will forget everything you learn later on in life, ive taken calculus before and now i have to restart at this stage...just to remember it all. But i do know enough not to pay 110 dollars for a freaking tennis racket.

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