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    Question

    Ram and Shyam can complete a

    piece of work together in 15 days. If Shyam is 50% more efficient than Ram, find how long Shyam alone will take to finish the work.
    A 10 days Correct Answer Incorrect Answer
    B 18 days Correct Answer Incorrect Answer
    C 22 days Correct Answer Incorrect Answer
    D 25 days Correct Answer Incorrect Answer

    Solution

    ATQ, Let the efficiency of Ram alone = 6 units/day. Then, efficiency of Shyam alone = 6 + 6 × 0.5 = 9 units/day. Total work = (6 + 9) × 15 = 225 units. Thus, time taken by Shyam alone to complete the work = 225 ÷ 9 = 25 days.

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