The Walzer's average phone bill increased from $16.65 to $19.98 what is the percent of increase?

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Answer 1 · 2017-05-28T14:34:20

See a solution process below:

The formula for calculating the percent change in a value between two points in time is:

#p = (N - O)/O *100#

Where:

#p# is the percent change - what we are solving for in this problem.

#N# is the New Value - $19.98 in this problem.

#O# is the Old Value - $16.65 in this problem.

Substituting and solving for #p# gives:

#p = ($19.98 - $16.65)/($16.65) *100#

#p = ($3.33)/($16.65) *100#

#p = ($333)/($16.65)#

#p = 20#

The Walzer's phone bill increased 20%