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    Question

    The average cost of 4 chairs is Rs. 11000. The average

    cost decrease by 15% when one more chair is included. What is the cost price of the 5th chair?
    A Rs.2750 Correct Answer Incorrect Answer
    B Rs.3360 Correct Answer Incorrect Answer
    C Rs.3800 Correct Answer Incorrect Answer
    D Rs.2200 Correct Answer Incorrect Answer

    Solution

    Total cost of 4 chairs = 11000×4 = Rs. 44000 Average cost of all the 5 chairs = 11000×(85/100) = Rs. 9350 Total cost of all the 5 chairs = 9350 ×5 = Rs. 46750 Cost of the 5thchair = 46750 - 44000 = Rs. 2750

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