Looking for logic, and not finding enough

Menu page at Red Racer Restaurant (Note the price of the first item)

Menu page at Red Racer Restaurant (First item on the above page)

Menu page at Red Racer Restaurant (Note the price of the third item)

Menu page at Red Racer Restaurant (Third item on the above page)

Consistency may be the hobgoblin of small minds, but it can make life easier for both customers and staff.

On one page of Red Racer's menu I see prices listed in dollars and fractions (15 1/4), on another I see prices listed in dollars and cents (14 75).

Why not be consistent?