What do I need for A2?

Hi all,
I hope everyone got what they wanted today; I got ABB which I'm really pleased and relieved about but I'm confused how to work out what grades I need for next year with UMS and all that? Numbers aren't my strong point could anyone shed some light on how to work out what 'points' are needed to achieve AAB at the end of a level? Thanks

Ok so on my print out I have a column with Mark Equivalent and another column with Points with different numbers, which is my UMS (dumb blonde moment here)

I think it's the mark equivalent column.

Thanks, in that case

History - 150
English Lit - 166
Business - 140

Thanks, in that case

History - 150
English Lit - 166
Business - 140

A at A2 is 320 UMS
B at A2 is 280 UMS

AAB at A2 (A in English Lit and History):
You need:
History - 170 (A at A2)
English Lit - 154 (B)
Business - 140 (B)

AAB at A2 (A in English Lit and Business)
You need:
History - 130 (C)
English Lit - 154 (B)
Business: 180 (A* - this would actually get you A*AB)

Thank you so much!

I'm guessing History and Business are the Bs?
By the looks of it, it's out of 200 ums marks so for A2 to get A(business) A (English lit) B (History) you would need
History - 130 - mid C
Business - 160 - A
English lit - 154 - high(ish) B

It's worked out on the basis that A2 is out of 400
from which: A - 320
B - 280
C - 240 and so on

Thank you for your help, this UMS stuff is so lost on us hopeless maths people lol