6.3. An old problem. On a hot summer day, 6 mowers drank a barrel of kvass in 8 hours. How many mowers will drink the same barrel of kvass in 3 hours?

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6.3. If 6 mowers drank a barrel of kvass in 8 hours, then one mower would drink this barrel in 48 working hours. Therefore, 16 mowers would drink the barrel of kvass in three hours.