For this case we have:
Store 1:
We propose the following rule of three:
24.95 -----------> 100%
x -------------------> 25%
Where the variable x represents the discount amount:
Thus, the price of the ball is:
Store 2:
We propose the following rule of three:
25.80 -----------> 100%
x -------------------> 30%
Where the variable x represents the discount amount:
Thus, the price of the ball is:
25.80-7.74 = 18.06
Thus, the price difference is:
ANswer:
0.6525