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    Question

    A can complete 12% of the work in 15% of the allotted

    time. A and B worked for the entire period of the allotted time and the work was completed on time. What portion of the work was done by B?
    A 10% Correct Answer Incorrect Answer
    B 20% Correct Answer Incorrect Answer
    C 15% Correct Answer Incorrect Answer
    D 25% Correct Answer Incorrect Answer

    Solution

    Let the total time taken by them be 100 minutes. So,   15% of 100 minutes = 15 minutes Now, 12% of work is completed in 15 minutes by A 4% of work is completed in 5 minutes by A 80% of work is completed in 100 minutes by A If A can complete 80% in 100 minutes, then, B will complete the remaining portion i.e. (100 - 80) = 20% ∴  20% of the work was done by B.

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