A group of children stood in three rows. The 1st row had 7y children. The 2nd row had 3y more children than the 1st row. The 3rd row had 9 less children than the 2nd row.
- Find the number of children in the 3rd row in terms of y. Give your answer in the simplest form.
- There were 61 children in the 3rd row. Find the value of y.