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 136 cm by 40 cm by 134 cm. Container B measures 60 cm by 27 cm by 56 cm. Container C is 66 cm by 20 cm by 30 cm. Both holes are located at a height of 15 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?
Volume of Container A to pour into Container B
= 136 x 40 x 15
= 81600 cm³

Volume of the Container B that can be filled before overflow
= 60 x 27 x (56 - 15)
= 66420 cm³ 

Volume of water in Container C
= 81600 - 66420
= 15180 cm³ 

Base area of Container C
= 66 x 20
= 1320 cm² 

Final height of Container C
= 15180 ÷ 1320
= 11.5 cm

Answer(s): 11.5 cm