Question
Pipe 'A' takes 10 minutes to fill half the tank. Pipe
'B' is 2 times more efficient than pipe 'A'. Find % of tank filled in 5 minutes by both.Solution
Full tank time = 10 × 2 = 20 minutes A’s efficiency = x units/min Tank capacity = 20x units B’s efficiency = 2x units/min Work in 5 minutes = (x + 2x) × 5 = 15x units Percentage = (15x / 20x) × 100 = 75%
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