The price of a notebook was $3.75 yesterday. today, the price fell to $3.50. find the percentage decrease. round your answer to the nearest tenth of a percent.

Let's find the absolute difference first: .

Now, we must ask ourselves: which percentage of 3.75 is 0.25? Since we compute the x percent of 3.75 by multiplying it by , we are posing the following question:

Solving for , we have

So, the price decreased by the

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step-by-step explanation:

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geometry: triangles

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call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584