Solution:
If a pipe is 10feet long and it needs to be cut into pieces that are each 2/5 feet long, this means that the number of pieces that can be made from this pipe is:
[tex]10\text{ x }\frac{5}{2}\text{ = }\frac{50}{2}=\text{ 25}[/tex]so that, we can conclude that the correct answer is:
25.