Answer:
12 1/2 pounds
Step-by-step explanation:
You want to know the total weight of 50 hamburger patties that weigh 1/4 pound each.
The weight of 50 patties will be the sum of their weights. That sum is most easily figured using multiplication.
(1/4 lb) +(1/4 lb) +(1/4 lb) +... +(1/4 lb) . . . . 50 repetitions
= 50 × (1/4 lb)
= (50/4) lb = 12.5 lb
Rita bought 12 1/2 pounds of hamburgers.