A water tank is full. When 30 litres of water are removed from the tank, the tank is full. How much water does the tank hold when full?
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180 \text{ litres}
360 \text{ litres}
540 \text{ litres}
720 \text{ litres}
900 \text{ litres}
Select an option, then submit.
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Intermediate Mathematical Challenge 2017 (2017)
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