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    Question

    A is 20% more efficient than B. How much time will they

    working together take to complete a job which A alone could have done in 29 days?
    A 164/15days Correct Answer Incorrect Answer
    B 156/14days Correct Answer Incorrect Answer
    C 174/11days Correct Answer Incorrect Answer
    D 96/13days Correct Answer Incorrect Answer

    Solution

    20%=1/5 A is 20% more efficient than B then efficiency of A and B A             B 6             5 Total work =29×6 Together they can do work in= (29×6)/11 =174/11 days.

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