The answer is:" 128 oz. " . _________________________________________________________ There are: " 128 oz. " (in " 8 lbs." ) . _________________________________________________________ Explanation: ________________________________________________________ Set up a proportion; as a fraction; as follows: ________________________________________________________
400/ 25 = x / 8 ;
in which: "x" = the number of "ounces [oz.] there are in "8 lbs." ; ________________________________________________________ We shall solve for "x" , the answer to the problem:
Cross-factor multiply:
25x = (400) * 8 ;
→ 25x = 3200 ;
Divide each side of the equation by "25" ; to isolate "x" on one side of the equation; & to solve for "x" ;
→ 25x / 25 = 3200 / 25 ;
→ x = 128 . _________________________________________________________ Answer: " 128 oz. " . _________________________________________________________ There are: " 128 oz. " (in " 8 lbs." ) . _________________________________________________________
Note of interest: " 16 oz. = 1 lb. " (exact conversion).
So; "8 lbs. <span>= ?</span> oz. " ;
→ " 8 lbs. * (16 oz/ 1 lb) = ( 8 * 16) oz. =128 oz. ; → which is our answer! _________________________________________________________