hair color help

Please help!

My hair is bleached with light yellow roots and pale drab ends.
My hair dresser bleached it after foiling color in root area--came out dark gold.  So she bleached it and put a mixed Avida toner in it--now its pale and drab on the ends and pale yellow at roots.
I bought Clairol Radiance in 6GB and 8N.  I'm going to bleach the roots again
to get more of the yellow out.
Can you tell me what color my hair will come out after if I mix 1/3 of 6GB and
2/3 of8N?

I want to put it on the roots first and then on the ends because they are
porous.

Thanx,
Debctw2