Question

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

Answer 1

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