Final answer:
Mary would need 2 cups of almonds to make 12 cups of trail mix.
Step-by-step explanation:
To find the number of cups of almonds Mary would need to make 12 cups of trail mix, we can set up a proportion using the given information:
1 cup of almonds / 6 cups of trail mix = x cups of almonds / 12 cups of trail mix
Cross-multiplying, we get:
6 * x = 1 * 12
6x = 12
x = 12/6
x = 2
Therefore, Mary would need 2 cups of almonds to make 12 cups of trail mix, using the same proportion.