Answer: 5 pounds
80 oz = 5 lbs
How to convert Ounces to Pounds
1 ounce (oz) is equal to 0.0625 pounds (lb).
1 oz = (1/16) lb = 0.0625 lb
The mass m in pounds (lb) is equal to the mass m in ounces (oz) divided by 16:
m(lb) = m(oz) / 16
Example
Convert 5 oz to pounds:
m(lb) = 5 oz / 16 = 0.3125 lb
Hope this helps!!! Good luck!!! ;)