# Evenly spreading study over 20 days?

Want to study $8$ hours a day, and $4$ hours on exam days.

Want to study all exams exactly the same amount of time total.

Exams in $10$,$13$,$19$,$20$ days from start.

What is the daily distribution of study per class? Given that it remains the same for the first $9$ days, changes again at $13$ days, $19$ and $20$.

I imagine this $is$ possible to determine

Example:

Day 1 - Day 9

Class 1: 4 hours

Class 2: 2 hours

Class 3: 1 hour

Class 4: 1 hour

Day 11 - Day 13

Class 2: 4 hours

Class 3: 2 hours

Class 4: 2 hours

Day 15 - Day 18

Class 3: 4 hours

Class 4: 4 hours

• Are you considering that you are able to work for 8 hours on exam days? – user88595 Jun 5 '14 at 3:41
• @user88595 Actually no, make it 4 hours of study on an exam day(since I travel as well). – user142198 Jun 5 '14 at 4:01
• I actually recommend taking the evening off before your exam; or some light studying. Also, I find that breaks make one's studying time more effective. Reagan said: "It is not the years in your life, but the life your years. I say that it is not the hours in your studying, but the studying in your hours. – Christopher K Jun 5 '14 at 4:25
• @ChrisK Probably true, regardless I am still really confused as to why I can't work this out. – user142198 Jun 5 '14 at 5:08
• @user142198, is this a problem OR you are asking practical advice? – Vikram Jun 5 '14 at 7:58

• Only subject $3,4$ are time equivalent? – Display Name Jun 6 '14 at 2:50