Answer:
10 pieces
Explanation:
The computation is shown below:
Quantity MU Price
1 $5 $2.75
2 $4.75 $2.75
3 $4.50 $2.75
4 $4.25 $2.75
5 $4 $2.75
6 $3.75 $2.75
7 $3.50 $2.75
8 $3.25 $2.75
9 $3 $2.75
10 $2.75 $2.75
So she should eat 10 pieces because the MU and Price are equivalent to each other