In the diagram not drawn to scale, Container B and Container C each has a button that, when pressed, will cause the water to flow out if the water level is higher than the hole. Container B measures 60 cm by 55 cm by 130 cm. Container C measures 25 cm by 20 cm by 70 cm. Container D is 50 cm by 60 cm by 70 cm. Both holes are located at a height of 15 cm from the top of their respective containers. When Container B is completely filled with water and both buttons are pressed, what will be the final water level in Container D? Express your answer in mixed number.
Volume of Container B to pour into Container C
= 60 x 55 x 15
= 49500 cm³

Volume of the Container C that can be filled before overflow
= 25 x 20 x (70 - 15)
= 27500 cm³ 

Volume of water in the Container D
= 49500 - 27500
= 22000 cm³ 

Base Area of the Container D
= 50 x 60
= 3000 cm² 

Final height of the container D
= 7¹⁰⁰⁰₃₀₀₀
= 7¹₃ cm

Answer(s): 7¹₃ cm