Step+5

To determine our final answer: >
 * 1 cup of unpopped-popcorn= 4.5 Ounces
 * 1 Ounce = 0.0625 Pounds0.28125 Pounds X 42,000 cups of unpopped-popcorn = 11,812.5 Pounds of unpopped-popcorn
 * 4.5 Ounces X 0.0625 Pounds = 0.28125 Pounds
 * **FINAL ANSWER: 11,812.5 Pounds**
 * **FINAL ANSWER: 11,812.5 Pounds**