Verified Answer :

5/5 that would be you're answer

Answer:

\(s =\frac{3}{40}\)

Step-by-step explanation:

Let find the middle point between both rationals. That is to say:

\(s = \frac{-\frac{1}{4}+\frac{2}{5} }{2}\)

\(s = \frac{\frac{-5+8}{20} }{2}\)

\(s =\frac{3}{40}\)