Every 5 1/2 cups of flour weighs 1 9/16 pounds. use a unit rate to show how you could determine if there are more than or less than 35 cups of flour in a 10-pound bag of flour.

1 9/16 pounds /  5 1/2 cups will tell you the unit rate of 25/88 pound per 1 cup.  So if you take 25/88 times 35 cups, you will find that it is 9 83/88 pounds.  This is less than a 10-pound bag of flour.