To determine which dog will eat more dog food per day, we need to calculate the amount of food each dog consumes per day.
For Bingo:
Bingo finishes a 15-lb. bag of dog food in 10 days.
Therefore, Bingo eats 15 lb. / 10 days = 1.5 lb. of dog food per day.
For Buddy:
Buddy finishes a 20-lb. bag of dog food in 16 days.
Therefore, Buddy eats 20 lb. / 16 days = 1.25 lb. of dog food per day.
From the calculations above, Buddy will eat more dog food per day at 1.25 lb.