Mathematics and Society - OS X Lion Server

~\JNNING~V7?(Unless more is found,the known amounts of some resources will last this long:iron - 72 years copper - 38 yearszinc - 28 years lead 27 years1) If you live to be 75 years old, which of those resources are likely to be minedout?(Use the figures above.)To avoid shortages, we can use less of theresources and recycle them. Here are theamounts used and the percent recycled nowfor some resources.',:':'.~r'M~CO~SERVI~G!": .;I ',', '..... "../:.: .', ': ':(Resource Amount used/year % recycled Amount recycledCopper 1,450,000 t 60%Aluminum 4,450,000 t 48%Lead 610,000 t 42%Iron 89,250,000 t 26%Paper 61,100,000 t 21%2) Find the amounts of the resources that are recycled, in metric tonnes.3) Nine million cars are junked every year. If there are about 90 million cars inuse, about what percent are junked?4) Can all these resources be recycled: coal, oil, natural gas, gold, silver, wood?5) What can the students in your class do to help conserve resources.(236