Ratio, proportion & rates of change > Ratio > 332- Share in a given ratio 1 > Quiz 1 >
4 >
5
1 of 5
The ratio of boys to girls in a class is 3:5. There are 32 students in the class. How many
students are boys?

25

step-by-step explanation:

b

step-by-step explanation:

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

if you need , reply with more info. u.