**Q: Last year, Emmy was 40 inches tall. This year, she is 42 inches tall. By what percent has her height increased?**

Answer: 5%

Explanation: Percent change is calculated by the following formula:

(New – Original)/Original x 100%

(42 – 40)/40 = 2/40 = .05

.05 x 100% = 5%

Since it is positive, this is a percent increase.

My TI-84 Plus program PRCNTCHG will calculate this, too.

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