Question
The figure is not drawn to scale. L and M are two tanks. The base area of L is 12 cm2 while the base area of M is 25 cm2. Tank L and M contained some water and the height of the water level in Tank L was 45 cm as shown. Dan then poured some water from Tank L into Tank M. After that, the height of the water level in both tanks became 22 cm. What was the height of the water level in Tank M at first?
3 m

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The figure is not drawn to scale. L and M are two tanks. The base area of L is 12 cm2 while the base area of M is 25 cm2. Tank L and M contained some water and the height of the water level in Tank L was 45 cm as shown. Dan then poured some water from Tank L into Tank M. After that, the height of the water level in both tanks became 22 cm. What was the height of the water level in Tank M at first?