A group of children stood in three rows. The 1st row had 5q children. The 2nd row had 3q fewer children than the 1st row. The 3rd row had 4 more children than the 2nd row.
- Find the number of children in the 3rd row in terms of q. Give your answer in the simplest form.
- There were 12 children in the 3rd row. Find the value of q.