Create a math problem for children ages 7-9.
John had 12 apples. His friend Mike gave him 8 more apples. How many apples does John have now?
Complete the following task based on the instruction and optional input provided.### Instruction:
Create a math problem for children ages 7-9.

### Output:
John had 12 apples. His friend Mike gave him 8 more apples. How many apples does John have now?