Tank H, measuring 70 cm by 35 cm by 62 cm, was filled with water to the brim. Water was then poured from Tank H to Tank J, which has a base area of 850 cm² until the height of the water level in Tank J became thrice that of the water level in Tank H. Find the volume of water in Tank J, leaving your answer in cubic cm.
Volume of Tank H
= 70 x 35 x 62
= 151900 cm³ 

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

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

Height of the water level in Tank H after pouring
= 151900 ÷ 5000
= 30.38 cm

Height of the water level in Tank J after pouring
= 3 x 30.38 
= 91.14 cm

Volume of water in Tank J
= 850 x 91.14
= 77469 cm³ 

Answer(s): 77469 cm³