The figure is not drawn to scale. U and V are two containers. The base area of U is 14 cm² while the base area of V is 28 cm². Container U and V contained some water and the height of the water level in Container U was 49 cm as shown. Dan then poured some water from Container U into Container V. After that, the height of the water level in both tanks became 23 cm. What was the height of the water level in Container V at first?
Change in the water level of Container U
= 49 - 23
= 26 cm

Volume of water poured in the Container V
= 14 x 26
= 364 cm³ 

Height increase in Container V
= 364 ÷ 28
= 13 cm

Original height of the water in Container V
= 23 - 13
= 10 cm

Answer(s): 10 cm