Abox sand weighs 12 pounds when it is 3/4 full. it weighs 2.9 pounds when it is 1/6 full. what is the weight of the box?

its the fourth option

72 fudge and 75 toffee

step-by-step explanation:

i hope this : )

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