Tonya is in a hamburger eating contest. Each hamburger is 4 ounces. Last year the winner ate 84 ounces. How many hamburgers does she have to eat to beat last year's winner?
Use reasoning to answer the following question.
22
Last year's winner ate 21 hamburgers because 84 / 4 = 21.

She needs to eat 22 hamburgers because 21 + 1 = 22.

.

Thus, the answer is 22