1. Since Terry works $1.5$ times faster than Melisa and it takes Melisa $2$ hours to finish, how long does it take Terry to finish? How much of the project can each of them finish in one hour? Then use the answer to this last question to figure out hoe much can they do together in one hour.

2. This is similar to example 8.7. If each of them works $3 + 5 = 8$ days, how much of the project can they finish? Using this, how much of the project can they do together in one day?

3. How much of the room can he clean in one minute if he is focused? How much can he clean when he is distracted? In the first $30$ minutes how much time was he focused and how much time was he distracted? So, how much of the room has he cleaned so far? How much does he have left to clean?