Answer:
GDP added by Exonmobil = $32 billion
Explanation:
Drivers purchased $70 billion Exonmobil gasoline.
Half is from Exonmobil and the other half from their party
So 70 billion/2= 35 billion for Exonmobil
And 35 billion from third parties
Exonmobil got $24billion from foreign sources so deduct from the Exonmobil figure 35 billion- 24 billion= $11 billion locally produced
60% of revenue from third party Independent stations goes to Exonmobil 0.6* 35 billion= $21 billion
Therefore total domestic product= 11 billion + 21 billion = $32 billion