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 Question from Corrine: When I am shopping for clothing that is for sale, the advertisement may say the item is 30% off. The original price was $70. How much would it now be? (how do I figure that out?) Thank you! Hi Corrine, 30% is$\large \frac{30}{100} \normalsize = 0.30$so 30% of$\$70$ is

$0.30 \times \70 = \21.$

Hence the price is reduced by $\$21$so the sale price will be $\70 - \21 = \49.$ Another way to look at this problem is to notice that$100\% - 30\% = 70\%\$ and hence after a 30% reduction you pay 70%. Thus the sale price is

$0.70 \times \70 = \49.$

Penny

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