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Mathematics, 05.05.2021 23:30 crybaby222psyc

In the morning a tank cntained 10 litres of water. At lunch time it contained 7 litres of water. What percentage of water was used fom the tanks

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In the morning a tank cntained 10 litres of water. At lunch time it contained 7 litres of water. Wha...
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