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The price of each item at the Dorf Gadget Store has been reduced by 20% from its original price. An MP3 player has a sale price of $112. What would the same MP3 player sell for if it was on sale for 30% off of its original price?

 Jun 18, 2020
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Everything is 20$ off its original price, so each item is 80% of its original price. This $112 MP3 player is 80$ of its original cost.

 

\(\frac{80}{100}x=112\\ 80x=11200\\ x=140\)

 

Its original cost is $140. 30% off would leave 70% of $140$, which is

 

\(\frac{7}{10}\cdot140\\ =98\)

 

Therefore the MP3 player would be $98.

 Jun 18, 2020

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