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Mathematics 18 Online
OpenStudy (anonymous):

from 1980 through 1990, the population of City Q increased by 20 percent. from 1990 through 2000, the population increased by 30 percent. what was the combined percent increase for the period 1980-2000? A) 25% B) 26% C) 36% D) 50% E) 56% Can u guys explain this for me please

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