increase

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increase

by hakyology » Tue Aug 05, 2008 9:46 am
The population of city X increased from 325,000 in 1980 to 350,000 in 1990, and it is projected that the population will increase by the same number from 1990 to 2000. Approximately what is the projected percent increase in population from 1990 to 2000?
a) 7.1%
b) 7.7%
c) 8.3%
d) 14.3%
e) 15.3%


the answer is a but i got b. please explain. thank you.
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by Travis_1234567890 » Tue Aug 05, 2008 9:53 am
In 1980 = 325000

In 1990 = 350000

Change from 1980 to 1990 is 25000

If the change from 1990 to 2000 will be the same number (25000), then your % increase is 25000/350000 = 7.1%