If the 3 friends work on 2 yards, then together they will earn:

If the 3 friends work on 3 yards, then together they will earn:

If the 3 friends work on 4 yards, then together they will earn:

If the 3 friends work on 5 yards, then together they will earn:

Answer:
Therefore, if the 3 friends work on 5 yards, then together they will earn $180.