Question

A gallon of milk cost $2.90 in 2002. In 2018, it cost

$3.80. what is the percent change pf the cost of a gallon
of milk from 2002 to 2008?

Answer 1

The cost of a gallon of milk changed 31%

Explanation:

Percent Change

Is the difference between two values of the same variable in different times or conditions, expressed as a percentage of the original value.

The formula is:

`\displaystyle Pc=\left |(v1-v2)/(v1) \right |\cdot 100\%`

Where

v1 = original value

v2 = final value

The gallon of milk cost v1=$2.90 in 2002 and v2=$3.80 in 2018. The percent change is:

`\displaystyle Pc=\left |(2.90-3.80)/(2.90) \right |\cdot 100\%`

`\displaystyle Pc=\left |(-0.9)/(2.90) \right |\cdot 100\%`

Pc = 31%

The cost of a gallon of milk changed 31%