There are 20 slices of American cheese per pound. How many ounces does a slice of American cheese weigh??

Question

(to the nearest 10th of an ounce

Answer 1

This is simply a units conversion problem.  To convert units without changing the value, we use the multiplicative identity (that is, 1).  For this problem, we need this information:

      16 oz. = 1 lb.

 

So,

        a slice

        (a slice)*1

        (1 slice)*( (1 pound)/(20 slices) )* ( (16 oz)/(1 pound) )     [note: slice and pounds cancel, leaving only ounces)

        (1)*(1/20)*(16/1)  ounces

        0.8 ounces     (exactly, to the nearest 10th of an ounce)

Answer 2

A pound is equal to 16 ounces. If 20 slices equals 1 pound equals 16 ounces, then 1 slice is equal to 16 oz / 20 = .8 ounces.

 

1 pound = 16 oz = 20 slices

 

16/20 oz per slice