Answer:
it will take 1120 bushels of grapes to make 3200 quarts of jelly.
Explanation:
We can use a proportion to solve this problem. If 10.5 bushels of grapes make 30 quarts of jelly, then we can write:
10.5 bushels / 30 quarts = x bushels / 3200 quarts
where x is the number of bushels of grapes needed to make 3200 quarts of jelly.
To solve for x, we can cross-multiply and simplify:
10.5 bushels * 3200 quarts = 30 quarts * x bushels
33600 bushels-quarts = 30x bushels-quarts
Dividing both sides by 30 bushels-quarts, we get:
x = 33600 bushels-quarts / 30 bushels-quarts
x = 1120 bushels