There no other figure but can take a property that is linear pair or linear pair axiom
Best choice for variables.....I would let students be " s " and parents be " p "
X^2+3x=24, halve the linear coefficient, square it, and add it to both sides
In this case (3/2)^2=2.25
x^2+3x+2.25=26.25 now the left side is a perfect square...
(x+1.5)^2=26.25 take the square root of both sides
x+1.5=±√26.25 subtract 1.5 from both sides
x=-1.5±√26.25
x=-1.5-√26.25 and -1.5+√26.25
x≈ -6.62 and 3.62
Add a zero to each of the end of them
Peppermint to chocolate is 5:3, so5p=3c, and peppermints to gummies is 3:4, so 3p = 4g.
5p = 3c
*3 *3
15p = 9c
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3p = 4g
*5 *5
15p = 20g
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15p = 9c
15p = 20g
9c = 20g, so chocolates to gummies is 9:20.