First, I know that for 2 cups of raisins for every 9 cups of trail mix and I am going to divide, 9÷2 and got 4.5 so for every cup of raisins, I need to multiply it by 4.5 to get how much trail mix I had in total so I need to multiply 12× 4.5. to get my answer so 12×4.5=54 so I had 54 cups of trail mix.
I hope this helped