Entry level Astrophysics problem Please solve this CRITICAL

Entry level Astrophysics problem!

Please solve this CRITICAL problem of my assignment correctly and show procedure clearly please. I will provide the link to the images for the \"appendix G\" that the problem asks for.

Solution

a) For the AIV dwarf

m_V = +1.3, B-V = 0.01, thus m_B = (B-V) +m_V = 1.31

For the K0III giant star

m_V = +1, B-V = 1.00, thus m_B = (B-V) +m_V = 2.0

net B-V = (B-V)_1 - (B-V)_2 = 0.99