Question

Susan counted a total of 36 red and green cars in the parking lot. There were 8 times as many red cars as green cars. How many red cars did Susan count?

Answer 1

32 red cars.

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;

`R + G = 36` ...........equation 1

`R = 8G` ...........equation 2

Substituting equation 2 into equation 1;

`8G + G = 36`

`9G = 36`

`G = (36)/(9)`

G = 4

The number of green cars are 4.

From,
`R = 8G`

`R = 8*4`

R = 32

Therefore, the number of red cars that Susan counted are 32.