Answer:
25% increase.
Explanation:
A gallon of milk increased from 3.24 to 4.05.
We have to calculate the percentage of increase. So first we find the increase.
4.05 - 3.24 = 0.81
To calculate the percentage, we divide 0.81 by 3.24 and multiply by 100.
=
× 100
= 0.25 × 100 = 25%
The percentage of increase is 25%