Question

The formal name for garoage is municipal solid waste." Exercise 1.11 (page 24) presented the number of landais operating in the United States in the years 198 to 2000 Here is a breakdown o the matenials that made up American municipal solid waste in 2000 Weight (million tons) Food scraps Mctale Paper, papertoand 19.2 24.4 Rubbe, lehe, exiles wood ard trimminas 27.0 Total 229.3 Flease use 1 decma place a) The wcights ot the ninc matcrials add to 229.3 milicn tons. What Is the weght ot the "Other sold wastc not included in the cight categonics spcahicd? (a What percent of the oal 1% municipal soid waste is made up of paper and papertoardGve answer to 1 decimal place d paperboad?

Answer 1

(a) The weight of Other solid waste material is calculated as

Other=Total-(Sum of weights of 8 categories)=229.3-(25.1+12.3+18.2+86.6+24.4+15+12+27.9)=7.8

(b) The percentage of solid waste made up of paper and paperboard is