Question 1180116
<br>
The required 24 ounces is 12 ounces twice.<br>
12 ounces can be made using...
(a) the 12-ounce can once; or 
(b) the 6-ounce can twice; or 
(c) the 4-ounce can three times.<br>
So the 24 ounces can be obtained with...
(1) (a)+(a): 12 + 12
(2) (a)+(b): 12 + 6 + 6
(3) (a)+(c): 12 + 4 + 4 + 4
(4) (b)+(b): 6 + 6 + 6 + 6
(5) (b)+(c): 6 + 6 + 4 + 4 + 4
(6) (c)+(c): 4 + 4 + 4 + 4 + 4 + 4<br>
ANSWER: She can measure 24 ounces in 6 different ways.<br>