Question
Pipe E can fill a pool in 24 hours and pipe F in 48
hours. If both the pipes are opened in an empty pool, how much time will they take to fill it?Solution
Let the capacity of tank be 96 litres (LCM of 24 and 48) Efficiency of 'E' = (96/24) = 4 litres/hour Efficiency of 'F' = (96/48) = 2 litres/hour Required time = 96 ÷ (4 + 2) = 16 hours
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