Im pretty sure it would be 26 because you can buy 25 hamburgers at the price of 5 for $9 and then buy one for $3.
By purchasing 5 sets of 5 hamburgers for $45, and then using the remaining $3 to buy 1 additional hamburger, the maximum number of hamburgers that can be purchased for $48 is 26. This approach uses the bulk pricing effectively to maximize quantity. Therefore, the answer is 26 hamburgers.
;