The ratio of boys to girls is 3 to 5. if there are 104 total children, how many girls are there?

Step-by-step explanation:

Ratio of boys to girls = 3:5

Total ratio = 3+5 = 8

Total no. Of children = 104

No of girl = 5/8 × 104

No of girls = 5 × 13 = 65

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+

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