Find selling price when marked price =1120 and discount =20%

$224

Step-by-step explanation:

20 percent= 1/5

1/5 of 1120=1120 divided by 5

dividing by 5 is like dividing by ten and multiplying by two

1120 divided by 10 = 112

112*2=224

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