
Fred H. answered 01/11/16
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Retired ivy league engineer math and english tutor
There are 0.001 kg in 1 gram.
Based on that the weight of cocoa in each box would be 0.385 - 0.039 or 0.346 kg per box
For 8 boxes, the weight of cocoa is (8 boxes) (0.346 kg/box) = 2.768 kg