8
What we know:
:A ratio can be written as a fraction
:4/2 = 2
:We can either do distributive prop. or just solve whatever is in the parenthesis first because of PEMDAS.
Knowing this, we can say the equation is 4/2 * (3+1)
3+1 = 4
2 × 4 = 8
we can do
(2 × 3) + (2 × 1) which is the same as 6 + 2 and you will also get 8.