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Question
The school bell rings once in an hour, to indicate that the session ends/next session begins. And for break, it will be 20 minutes. Shall we try to fill this up?
Here is the time table.
| Period 1 | Period 2 | Break | Period 3 | Period 4 | Break | Period 5 | Period 6 |
| 9:00 | 10:00 | 11:00 | 2:40 |
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Solution
| Period 1 | Period 2 | Break | Period 3 | Period 4 | Break | Period 5 | Period 6 |
| 9:00 | 10:00 | 11:00 | 11:20 | 12:20 | 1:20 | 1:40 | 2:40 |
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