Question

The price of a gallon of milk has increased from $3.24 to $4.05. What is the percentage increase?

Answer 1

25%

3.24*.25= .81
3.24+.81=4.05

Answer 2

percent increase = 25%

Explanation:

The price of a gallon of milk has increased from $3.24 to $4.05

LEt x be the percentage increase

intitial cost + initial cost times percentage = new cost

`3.24 + 3.24 ((x)/(100))= 4.05`

Subtract 3.24 from both sides

`3.24 ((x)/(100))= 0.81`

divide by 3.24 on both sides

`((x)/(100))= 0.25`

Multiply both sides by 100

x= 25 %