Incredible Goals That Would Have Been

If 9 billion were spent in year 2012 for veterans, then what would have been the total expenditure for that year (in billions)?

A radio is sold for Rs. 880 at a profit of 10%. What would have been the gain or loss percent, had it been sold for Rs. 780 ?

In the above question, what would have been the change in current in A if battery were some internal resistance.