Question
Bottle X and Bottle Y are fully filled with water. If all the water in Bottle X is poured into Tank Z, it is 87 litres short of filling it to the brim. If all the water in Bottle Y is poured into the same tank, it is 65 litres short of filling it to the brim. If the water from both bottles is poured into the same tank, it will completely fill it. If both Tank Z and Bottle Y are completely filled, how much more water can the Tank Z fill than Bottle Y?
2 m

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Bottle X and Bottle Y are fully filled with water. If all the water in Bottle X is poured into Tank Z, it is 87 litres short of filling it to the brim. If all the water in Bottle Y is poured into the same tank, it is 65 litres short of filling it to the brim. If the water from both bottles is poured into the same tank, it will completely fill it. If both Tank Z and Bottle Y are completely filled, how much more water can the Tank Z fill than Bottle Y?