In the diagram not drawn to scale, Container A and Container B each has a button that, when pressed, will cause the water to flow out if the water level is higher than the hole. Container A measures 70 cm by 75 cm by 130 cm. Container B measures 25 cm by 70 cm by 60 cm. Container C is 100 cm by 10 cm by 30 cm. Both holes are located at a height of 20 cm from the top of their respective containers. When Container A is completely filled with water and both buttons are pressed, what will be the final water level in Container C? Express your answer in mixed number.
Volume of Container A to pour into Container B
= 70 x 75 x 20
= 105000 cm³

Volume of the Container B that can be filled before overflow
= 25 x 70 x (60 - 20)
= 70000 cm³ 

Volume of water in the Container C
= 105000 - 70000
= 35000 cm³ 

Base Area of the Container C
= 100 x 10
= 1000 cm² 

Final height of the container C
= 35
= 35 cm

Answer(s): 35 cm