ThepopulationofBumptonincreasedby10%from1980to1990anddecreasedby10%from1990to2000.WhatisthenetpercentchangeinthepopulationofBumptonfrom1980to2000?
A: -9%
B: -1%
C: +0%
D: +1%
E: +9%
A: -9%
B: -1%
C: +0%
D: +1%
E: +9%
举一反三
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