
Fred H. answered 01/11/16
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Retired ivy league engineer math and english tutor
The total number of boxes of dried fruit in 3 cartons, with each carton containing 16 boxes is (3)(16) = 48 boxes
Since each box of dried fruit contains 3 milligrams of preservatives, the total number of preservatives is:
(3 milligrams/box) (48 boxes ) = 144 milligrams of preservative