Have you got the answers 100 rooms level 9?
If not, you can follow the following explanation.
Go to the room with the window and heater, zoom in on the back of the heater by pressing on the heater's right side, tap to take the skinny pole behind the heater. Go to the bookshelf and press the box on the right to move it towards the bookshelf.
Answer 100 rooms rate of 9 next
Zoom in on the safe above the bookshelf and enter the code: green, red, red, blue, green, blue, red (the colors of the fish on the shelf from left to right).
Pick up the hook inside the safe, and now press the pole in your inventory twice to zoom into it, then press the hook in your inventory and press the zoomed in pole to combine them.
Go to the desk and zoom in on the green tank, select the long hook from your inventory and get the key, use the key on the door to open it. Well ... that is to answers 100 rooms level 9
Now continue to the 100 Rooms Answers Level 10 Explanation, or back to the 100 Rooms Answers Level 8 Solutions