In the diagram not drawn to scale, Container M and Container N each has a button that, when pressed, will cause the water to flow out if the water level is higher than the hole. Container M measures 80 cm by 65 cm by 130 cm. Container N measures 15 cm by 70 cm by 90 cm. Container P is 80 cm by 20 cm by 60 cm. Both holes are located at a height of 20 cm from the top of their respective containers. When Container M is completely filled with water and both buttons are pressed, what will be the final water level in Container P? Express your answer in mixed number.
Volume of Container M to pour into Container N
= 80 x 65 x 20
= 104000 cm³

Volume of the Container N that can be filled before overflow
= 15 x 70 x (90 - 20)
= 73500 cm³ 

Volume of water in the Container P
= 104000 - 73500
= 30500 cm³ 

Base Area of the Container P
= 80 x 20
= 1600 cm² 

Final height of the container P
= 19¹⁰⁰₁₆₀₀
= 19¹₁₆ cm

Answer(s): 19¹₁₆ cm