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

Answer:

percent increase = 25%

Step-by-step 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

$3.24 + 3.24 (\frac{x}{100})= 4.05$

Subtract 3.24 from both sides

$3.24 (\frac{x}{100})= 0.81$

divide by 3.24 on both sides

$(\frac{x}{100})= 0.25$

Multiply both sides by 100

x= 25 %