Answer:
Daniel has 12 apples in his bag.
Step-by-step explanation:
(Let the number of apples that can fit in a bag be represented by A.)
Daniel bought 2A apples (two bags full) and 3 additional apples.
After eating 15 apples, he had one full bag of apples left.
= 2A + 3 - 15 = A.
= -12 = A.
Answer: Therefore, there were 12 apples in the bag.