Answer:
<h2>Fraction => 3/10 </h2>
<h3>hope that helps ✌</h3>
we are given
BE=x
ED=x+10
AE=x+1
EC=x+3
we can see that two chords AC and BD are intersecting inside the circle
so, we can use property
now, we can plug values
now, we can multiply them
now, we can move all terms on left side
...............Answer
ratio of boys : girls : all students
7 : 5 : 12
multiply all by 13
91 : 65 : 156
there are 65 girls