Answer: 3 million barrels
Step-by-step explanation:
Given :- Total crude oil= 60 million barrels
Quantity of gasoline = 34% of total crude oil

Quantity of diesel = 29% of total crude oil

Clearly, Quantity of gasoline is more than Quantity of diesel
difference = Quantity of gasoline-Quantity of diesel

Therefore, The production of gasoline is 3 million barrels more than diesel last year.