In the diagram not drawn to scale, Container P and Container Q each has a button that, when pressed, will cause the water to flow out if the water level is higher than the hole. Container P measures 124 cm by 51 cm by 136 cm. Container Q measures 60 cm by 21 cm by 67 cm. Container R is 61 cm by 25 cm by 27 cm. Both holes are located at a height of 12 cm from the top of their respective containers. When Container P is completely filled with water and both buttons are pressed, what will be the final water level in Container R?
Volume of Container P to pour into Container Q
= 124 x 51 x 12
= 75888 cm³

Volume of the Container Q that can be filled before overflow
= 60 x 21 x (67 - 12)
= 69300 cm³ 

Volume of water in Container R
= 75888 - 69300
= 6588 cm³ 

Base area of Container R
= 61 x 25
= 1525 cm² 

Final height of Container R
= 6588 ÷ 1525
= 4.32 cm

Answer(s): 4.32 cm