Answer:
It should purchase the Virginia Bonds.
Step-by-step explanation:
As the bonds are from another State they will be subject to taxation from both, the state and the Federal Government:
We comparethe after-tax yields:
North Carolina
0.046 x (1 - 0.40) = 0.0276 = 2.76% after-tax
Virginia
0.045 x (1 - 0.35) = 0,02925 = 2.925% after-tax
As the bond within the state provides a better yields Tammy should purchase there.