Answer:
9 cups of pretzels, 12 cups of popcorn, 4 cups of peanuts, 3 cups of chocolate chips
Explanation:
When multiplying fractions, you multiply straight across. When you multiply, you also have to turn 12 into a fraction by putting it over 1. Multiply 3/4 by 12 to get 9. Multiply 2/3 by 12 to get 12. Multiply 1/3 by 12 to get 4. Multiply 1/4 by 12 to get 3.