Question
The figure is not drawn to scale. H and J are two containers. The base area of H is 23 cm2 while the base area of J is 65 cm2. Container H and J contained some water and the height of the water level in Container H was 42 cm as shown. Dan then poured some water from Container H into Container J. After that, the height of the water level in both tanks became 29 cm. What was the height of the water level in Container J at first?
3 m

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The figure is not drawn to scale. H and J are two containers. The base area of H is 23 cm2 while the base area of J is 65 cm2. Container H and J contained some water and the height of the water level in Container H was 42 cm as shown. Dan then poured some water from Container H into Container J. After that, the height of the water level in both tanks became 29 cm. What was the height of the water level in Container J at first?