Answer:
2.5 lbs
Explanation:
We need a conversion factor that converts ounces into pounds.
It is accepted that 16 ounces (oz) = 1 pound (lb). Make this a conversion factor:
Conversion factor = (1 lb)/(16 oz)
We want to convert oz into pounds. If the 40 oz is multiplied by (1 lb/16 oz) the oz will cancel, leaving justs lbs:
(40 oz)*((1 lb)/(16 oz)) = (40/16) lbs
40 oz is equal to 2.5 lbs