Mathematics, 01.02.2021 17:10 keagank
From 1999 to 2000, the number of days of unhealthy air quality in Charlotte, North Carolina, dropped from 5 to 2. Find the percent of decrease in the number of days of unhealthy air.
A.
15%
B.
6%
C.
1.5%
D.
60%
Answers: 2
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From 1999 to 2000, the number of days of unhealthy air quality in Charlotte, North Carolina, dropped...
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