Question 53108
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Help solve:
act exam rose from 20.6 in 1990 to 21.0 in 1998. What percent increase was this.
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        Calculations and the answer in the post by @consc198 are incorrect.

        For a correct solution see what follows.



21.0 - 20.6 = 0.4.

0.4 divided by 20.6  is  approximately 0.01942.

The percent increase is  1.942%.