Answer: Mrs. Robinson
Explanation:
Let's find Mrs. Robinson first
100% - 20% = 80% or 0.8
29.99 times 0.8% = $24
29.99 -24 = $5.99 off
Now Let's find Mr.Chang
100% - 10% = 90% or 0.9
25 times 0.9% = $22.50
25 - 22.50 = $2.50 off
So Mrs. Robinson received a better discount!