Q: Given a balanced spinner (like the kind you use for twister) divided into quarters, find the following probabilities...

a) $\displaystyle A={1/4}$

b) $\displaystyle A=[\frac{1}{4},\frac{3}{8}]$

A:

(a) $\displaystyle P(A)=\empty$

(b) I am not sure how to do this one. I keep getting 32.5%, but that cant be.

How do I do this systematically?

Thank you