Exercise 13 Page 148

To determine a [[[Method:Calculating Percent of Change|percent change]] p, we can use the following general formula. p % =Amount of increase or decrease/Original amountFrom the given values, we can see the original amount was 14 500 and the new amount is 22 320, which is an increase. 22 320 - 14 500= 7820 The difference between the new amount and the original amount is 7820. Now we can use the formula.

Percent change=Amount of increase/Original amount

SubstituteValues

Substitute values

Percent change=7820/14 500

ReduceFrac

a/b=.a /20./.b /20.

Percent change=391/725

UseCalc

Use a calculator

Percent change ≈ 0.54

WritePercent

Convert to percent

Percent change ≈ 54 %

The percent increase is about 54 %.