Answer:
17 pieces
Explanation:
The student use
yards of paper for one box and
yard of paper for the other box.
Total no of rolls required is the sum of
yards and
yard. So,
![S=1(1)/(4)+(7)/(8)\\\\=(5)/(4)+(7)/(8)\\\\=(17)/(8)](https://img.qammunity.org/2021/formulas/mathematics/high-school/b2w2l4novdodsz3egl100uzcjihqea8gca.png)
Let there are x no of pieces will the student cut to use for the gift boxes. It can be calculated as :
![x=((17)/(8))/((1)/(8))\\\\=17](https://img.qammunity.org/2021/formulas/mathematics/high-school/18y1jekz12oiovo5ugrskhrwbllpgsyd34.png)
Hence, the student will cut 17 pieces to use the gift boxes.