Exercise 14 Page 148

Does the amount increase or decrease?

10 % increase

Practice makes perfect

To determine a [[[Method:Calculating Percent of Change|percent change]] p, we can use the following general formula. p %=Amount increase or decrease/Original amountFrom the given values, we can see the original amount was 195.50 and the new amount is 215.25, which is an increase. 215.25- 195.50= 19.75 The difference between the new amount and the original amount is 19.75. Now we can use the formula.

Percent change=Amount of increase/Original amount

SubstituteValues

Substitute values

Percent change=19.75/195.50

ReduceFrac

a/b=.a /5./.b /5.

Percent change=3.95/39.1

UseCalc

Use a calculator

Percent change ≈ 0.1

WritePercent

Convert to percent