If the price of a sweater is $24.99 without tax and $26.99 with tax, what is the tax rate? O 7%
0 7.50%
O 8%
O 8.50%

i think its 8%

Step-by-step explanation:

it is the closest

geometry: triangles

solvers

lessons

answers archive

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

tip $2.90

total $17.40