Solution cheat level 3 on 200 doors time machine. Take a broom from the right tank and keep it in your inventory, and drag the gas can from the left side of the screen to the tank. Then tilt your phone to move to the right tank.
Solution cheat level 4 on 200 doors.
Clean the sand in front of the door by using a broom from inventory, by finger tapping and shifted to the left and to the right.
Now continue to the 200 Doors Time Machine Level 5-6 Explanation, or back to the 200 Doors Time Machine Level 1-2 Solution