The figure is not drawn to scale. J and K are two containers. The base area of J is 65 cm² while the base area of K is 60 cm². Container J and K contained some water and the height of the water level in Container J was 44 cm as shown. Dan then poured some water from Container J into Container K. After that, the height of the water level in both tanks became 29 cm. What was the height of the water level in Container K at first?
Change in the water level of Container J
= 44 - 29
= 15 cm

Volume of water poured in the Container K
= 65 x 15
= 975 cm³ 

Height increase in Container K
= 975 ÷ 60
= 16.25 cm

Original height of the water in Container K
= 29 - 16.25
= 12.75 cm

Answer(s): 12.75 cm