Answer:
32 red cars.
Step-by-step explanation:
Let the red cars be denoted by R
Let the green cars be denoted by G
Translating the word expression into an algebraic equation;
[tex] R + G = 36[/tex] ...........equation 1
[tex] R = 8G[/tex] ...........equation 2
Substituting equation 2 into equation 1;
[tex] 8G + G = 36[/tex]
[tex] 9G = 36[/tex]
[tex] G = \frac{36}{9}[/tex]
G = 4
The number of green cars are 4.
From, [tex] R = 8G[/tex]
[tex] R = 8*4[/tex]
R = 32
Therefore, the number of red cars that Susan counted are 32.
