I *think* a full bag a jelly beans would be 45/4 oz or 11 1/4 oz
-3/5 of an bag weighs 6 3/4 oz, or 27/4 oz
-divide the 27 by 3 to get 1/5 of the weight, which gives you 9/4
-9/4 (5/1) (to get 5/5 of the weight) is 45/4
-45/4 is equal to 11 1/4
Hope this is right...