Question
The figure is not drawn to scale. B and C are two tanks. The base area of B is 10 cm2 while the base area of C is 20 cm2. Tank B and C contained some water and the height of the water level in Tank B was 53 cm as shown. Dan then poured some water from Tank B into Tank C. After that, the height of the water level in both tanks became 29 cm. What was the height of the water level in Tank C at first?
3 m

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The figure is not drawn to scale. B and C are two tanks. The base area of B is 10 cm2 while the base area of C is 20 cm2. Tank B and C contained some water and the height of the water level in Tank B was 53 cm as shown. Dan then poured some water from Tank B into Tank C. After that, the height of the water level in both tanks became 29 cm. What was the height of the water level in Tank C at first?