Container V and W are identical containers with the same base area and height. Container V is filled to the brim with water while Container W is empty. After 220 cm³ of water from Container V is poured into Container W, the depth of water in Container W is ¹₉ the depth of water in Container V. If the height of Container W is 25 cm, what is the base area of Container W?
The depth of water is proportional to the volume of water.

After water from Container V is poured into Container W:

Volume of water in Container V : Volume of water in Container W
 9 : 1

1 u = 220

Total volume of Container W
= 9 u + 1 u
= 10 u
= 10 x 220
= 2200 cm³

Base area of Container W
= 2200 ÷ 25
= 88 cm²

Answer(s): 88 cm²