ЁЯУв Too many exams? DonтАЩt know which one suits you best? Book Your Free Expert ЁЯСЙ call Now!

    Question

    If the average cost price of 15 identical books

    decreases by Rs. 3 after replacing one book with a new book that costs Rs. 60, what was the original cost price of the replaced book?
    A Rs.250 Correct Answer Incorrect Answer
    B Rs.210 Correct Answer Incorrect Answer
    C Rs.120 Correct Answer Incorrect Answer
    D Rs.105 Correct Answer Incorrect Answer

    Solution

    ATQ;

    Let the cost price of each book be Rs. 'x'.

    So, cost price of 15 books = Rs. 15x

    ATQ:

    (15x - x + 60) ├╖ 15 = x - 3

    Or, 14x + 60 = 15x - 45

    Or, x = 105

    So, the cost price of the book that was removed is Rs. 105.

    Practice Next
    More Profit and loss Questions

    Relevant for Exams:

    ask-question