if i get 6 lessons a day and have 80 lessons overdue with 8 days of school left. How many lessons do i have to do a day to get caught up before it ends.

Answer 1

You have a total of 6 x 8 = 48 lessons left during the next 8 days.
To catch up with the 80 overdue lessons, you need to do 80 + 48 = 128 lessons.
Therefore, you need to do 128/8 = 16 lessons per day to get caught up before it ends.