A ship is sailing in the water. It has a rope ladder hanging over its side. The rungs are 355 mm apart. Suppose if the water is rising one meter every 12 hours, how many rungs will be underwater after one day ?
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It does not matter how much apart are the rungs as no matter at how much speed the water level rises, none of the rungs will go underwater. This is because with the water level rising, even the ship will be rising. Thus none of the rungs go underwater.