Tank P, measuring 70 cm by 35 cm by 59 cm, was filled with water to the brim. Water was then poured from Tank P to Tank Q, which has a base area of 850 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
= 70 x 35 x 59
= 144550 cm³ 

Base area of Tank P 
= 70 x 35
= 2450 cm²

Total base areas
= 2450 + 850 + 850 + 850
= 5000 cm² 

Height of the water level in Tank P after pouring
= 144550 ÷ 5000
= 28.91 cm

Height of the water level in Tank Q after pouring
= 3 x 28.91 
= 86.73 cm

Volume of water in Tank Q
= 850 x 86.73
= 73720.5 cm³ 

Answer(s): 73720.5 cm³