In the diagram not drawn to scale, Container X and Container Y each has a button that, when pressed, will cause the water to flow out if the water level is higher than the hole. Container X measures 60 cm by 35 cm by 110 cm. Container Y measures 45 cm by 20 cm by 60 cm. Container Z is 100 cm by 60 cm by 80 cm. Both holes are located at a height of 20 cm from the top of their respective containers. When Container X is completely filled with water and both buttons are pressed, what will be the final water level in Container Z? Express your answer in mixed number.
Volume of Container X to pour into Container Y
= 60 x 35 x 20
= 42000 cm³

Volume of the Container Y that can be filled before overflow
= 45 x 20 x (60 - 20)
= 36000 cm³ 

Volume of water in the Container Z
= 42000 - 36000
= 6000 cm³ 

Base Area of the Container Z
= 100 x 60
= 6000 cm² 

Final height of the container Z
= 1
= 1 cm

Answer(s): 1 cm