BASIC ECONOMICS HELP. URGENT ! :) Paying 07 GP

[tsh]

Hey guys,
I just started economics
and I don't understand the questions. Can someone please give some help, especially with the calculations at the bottom in the second image.
Will pay 07 GP to the person who helps me
ITS URGENT
thanks so much in advance

 

[exapto]

I can help. But the it looks like you've already filled out some of it.... PM me.

 

[tsh]

I've finished it all.
Thanks exapto!
All sorted !