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21-11-2018
Mathematics

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A 50 liter aquarium weighs 23 kilograms empty. What does it weigh when filled with 45 liters of water?

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21-11-2018

totalweight=tankweight+waterweight

tankweight=weight when empty=23kg

waterweight=45liters mass

1liter weighs 1kg, so 45liters weights 45kg

totalweight=23+45=68kg

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