What is the total amount of paper, glass, and plastic waste not recovered

To solve this problem, you should know what is the not recovered waste for each item. To solve this, you should deduct the waste recovered from waste generated.

So for paper, the waste that is not recovered is 2.674 x 10^7.
While for glass, the not recovered waste is 0.840 x 10^7.
Lastly for plastics, the waste that is not recovered is 3.0554 x 10^7.

So by adding these three items, we can get now the total waste not recovered.

2.674 x 10^7 + 0.840 x 10^7 + 3.0554 x 10^7 = 6.5694 x 10^7.

Iam not sure , but probably 750 or 7.5