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    Question

    Pipe 'A' fills half tank in 18 minutes. Pipe 'B' is 5

    times as efficient as A. Find percentage of tank filled by both in 6 minutes.
    A 66.67% Correct Answer Incorrect Answer
    B 75% Correct Answer Incorrect Answer
    C 80% Correct Answer Incorrect Answer
    D 100% Correct Answer Incorrect Answer

    Solution

    Full tank time = 18 ├Ч 2 = 36 minutes AтАЩs efficiency = x units/min Tank capacity = 36x units BтАЩs efficiency = 5x units/min Work in 6 minutes = (x + 5x) ├Ч 6 = 36x units Percentage = (36x / 36x) ├Ч 100 = 100%

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