Question

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%

Answer 1

Wait let me see here

Answer 2

Answer: it’s D which is 60%, hope it helps