A bird in air is diving vertically over a tank with speed 5 cm/s. Base of tank is silvered. A fish in the tank is rising upward along the same line with speed 2 cm/s. Water level is falling at rate of 2 cm/s.
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A bird in air is diving vertically over a tank with speed 6cm/s . Base of tank is silvered . A fish in the tank is rising upward along the same line with speed 4/,cm/s . Water level is falling at rate of 2cm/s.
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