Tank P, measuring 50 cm by 30 cm by 39 cm, was filled with water to the brim. Water was then poured from Tank P to Tank Q, which has a base area of 700 cm² until the height of the water level in Tank Q became thrice that of the water level in Tank P. Find the volume of water in Tank Q, leaving your answer in cubic cm.
Volume of Tank P
= 50 x 30 x 39
= 58500 cm³ 

Base area of Tank P 
= 50 x 30
= 1500 cm²

Total base areas
= 1500 + 700 + 700 + 700
= 3600 cm² 

Height of the water level in Tank P after pouring
= 58500 ÷ 3600
= 16.25 cm

Height of the water level in Tank Q after pouring
= 3 x 16.25 
= 48.75 cm

Volume of water in Tank Q
= 700 x 48.75
= 34125 cm³ 

Answer(s): 34125 cm³