It would be B. 20 small and 10 large . i just did it on my caculator for you ;)
We know that
if the bird flies 5/6 miles north for -------------> 3/8 miles east
then
for 1 mile north------------------------------> X miles east?
X=(3/8)/(5/6)-------> 18/40-------> 9/20 miles
the answer is
9/20 miles
Answer:

Step-by-step explanation:
The area of the triangle is;




![A=\frac{1}{2}\times[(x+4)\times x] \\24=\frac{x^{2} +4x}{2} \\24\times2=x^{2} +4x\\48=x^{2} +4x\\x^{2} +4x-48=0\\](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B1%7D%7B2%7D%5Ctimes%5B%28x%2B4%29%5Ctimes%20x%5D%20%5C%5C24%3D%5Cfrac%7Bx%5E%7B2%7D%20%2B4x%7D%7B2%7D%20%5C%5C24%5Ctimes2%3Dx%5E%7B2%7D%20%2B4x%5C%5C48%3Dx%5E%7B2%7D%20%2B4x%5C%5Cx%5E%7B2%7D%20%2B4x-48%3D0%5C%5C)
This can only be solved by the quadratic formula.

where;

and we get,

If we make

an integer that represents the adults that bought tickets, and

the number of students, then we have the equations

, and

.
Using the second equation, we find that

, so we plug this value of

into the first equation to get

. We simplify to find

. We divide by

to isolate the desired variable to get

.