honeybager9870 honeybager9870

29-10-2017
Mathematics

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The price of a notebook has dropped to $3.20 today. yesterday's price was $3.45 . find the percentage decrease.

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Smileyface12345678 Smileyface12345678

30-10-2017

So the difference is .25, so the equation will be:

-.25 / 3.45 = x / 100
(cross multiply)
3.45x = -25
(divide both sides by 3.45)
x = -7.24

So there was a 7.24% decrease in the price

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