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10、The following appeared in a memo from the mayor of the town of West Egg. Two years ago, our consultants predicted that West Eggs landfill, which is used for garbage disposal, would be completely filled within five years. During the past two years, however, town residents have been recycling twice as much aluminum and paper as they did in previous years. Next month the amount of material recycled should further increase, since charges for garbage pickup will double. Furthermore, over ninety percent of the respondents to a recent survey said that they would do more recycling in the future. Because of our residents strong commitment to recycling, the available space in our landfill should last for considerably longer than predicted. | 
