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January 29, 2015

January 29, 2015

Posted by **kayla** on Sunday, October 30, 2011 at 8:19pm.

-- Explain why the cost of an item discounted 20% can be calculated by multiplying the original price by 0.8

- MATH -
**Ms. Sue**, Sunday, October 30, 2011 at 8:22pm100% - 20% = 80% = 0.8

When an item says it's 20% off, then the new price is 80% of the original price.

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