Question
The figure is not drawn to scale. N and P are two containers. The base area of N is 15 cm2 while the base area of P is 30 cm2. Container N and P contained some water and the height of the water level in Container N was 47 cm as shown. Dan then poured some water from Container N into Container P. After that, the height of the water level in both tanks became 22 cm. What was the height of the water level in Container P at first?
3 m

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The figure is not drawn to scale. N and P are two containers. The base area of N is 15 cm2 while the base area of P is 30 cm2. Container N and P contained some water and the height of the water level in Container N was 47 cm as shown. Dan then poured some water from Container N into Container P. After that, the height of the water level in both tanks became 22 cm. What was the height of the water level in Container P at first?