Tank X, measuring 70 cm by 40 cm by 61 cm, was filled with water to the brim. Water was then poured from Tank X to Tank Y, which has a base area of 350 cm² until the height of the water level in Tank Y became twice that of the water level in Tank X. Find the volume of water in Tank Y, leaving your answer in cubic cm.
Volume of Tank X
= 70 x 40 x 61
= 170800 cm³ 

Base area of Tank X 
= 70 x 40
= 2800 cm²

Total base areas
= 2800 + 350 + 350
= 3500 cm² 

Height of the water level in Tank X after pouring
= 170800 ÷ 3500
= 48.8 cm

Height of the water level in Tank Y after pouring
= 2 x 48.8 
= 97.6 cm

Volume of water in Tank Y
= 350 x 97.6
= 34160 cm³ 

Answer(s): 34160 cm³