Do you not know what "The rate of inflation was 23.75 percent for 2011."means? If you do, then just assume each of the "scenarios" and do the calculation to see if it fits. If "the price of a hot dog was $2.44 rather than $3.30 in 2010, with other prices in the table remaining fixed" then, at 23.75 percent interest, theprice in 2011 would be (2.44)(1.02375)= 2.50 NOT $3.63 which it would have to be to have "with other prices in the table remaining fixed".