In the diagram not drawn to scale, Container K and Container L each has a button that, when pressed, will cause the water to flow out if the water level is higher than the hole. Container K measures 50 cm by 65 cm by 140 cm. Container L measures 35 cm by 10 cm by 90 cm. Container M is 60 cm by 20 cm by 40 cm. Both holes are located at a height of 15 cm from the top of their respective containers. When Container K is completely filled with water and both buttons are pressed, what will be the final water level in Container M? Express your answer in mixed number.
Volume of Container K to pour into Container L
= 50 x 65 x 15
= 48750 cm³

Volume of the Container L that can be filled before overflow
= 35 x 10 x (90 - 15)
= 26250 cm³ 

Volume of water in the Container M
= 48750 - 26250
= 22500 cm³ 

Base Area of the Container M
= 60 x 20
= 1200 cm² 

Final height of the container M
= 18⁹⁰⁰₁₂₀₀
= 18³₄ cm

Answer(s): 18³₄ cm