Question

William has a 26-liter glass tank. First, he wants to put some marbles into it, all of the same volume. Then, he wants to fill the tank with water until it's completely full. If he uses 85 marbles, he will have to add 20.9 liters of water.
What is the volume of each Marble?

How much water is necessary if William uses 200 marbles? ​

Answer 1

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