Paint is to be mixed so that the ratio of red paint to white paint is 3 to 2. If Ben wants to make 30 cans of the mixture and all cans hold the same volume of paint, how many cans of red paint will he need?
Set it where
red paint is 3x
White paint is 2x
3x + 2x = 30
Solve for x.
Then evaluate red paint.
Can you do that?