Answer:
19.95 ≅ 20 boards will be required.
Step-by-step explanation:
The pieces have to be [tex]5 + \frac{1}{4}[/tex] = [tex]\frac{21}{4}[/tex] feet long.
A total number of 38 pieces are needed to cut.
In order to make 38 pieces total required length is [tex]38 \times\frac{21}{4}[/tex] = [tex]\frac{19times21}{2}[/tex] = 199.5
1 board is 10 feet long, hence total requirement of board is [tex]\frac{199.5}{10}[/tex] = 19.95
