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

    Question

    The sum of two numbers is 90 whereas the sum of their

    reciprocals is (30/11). Find the square of the product of the two numbers.
    A 2100 Correct Answer Incorrect Answer
    B 1089 Correct Answer Incorrect Answer
    C 1600 Correct Answer Incorrect Answer
    D 1200 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the two numbers be 'x' and 'y'.

    So, x + y = 90

    And (1/x) + (1/y) = (30/11)

    Or, {(x + y)/(xy)} = (30/11)

    Or, xy = (11/30) ├Ч 90 = 33

    So, required square = 33┬▓ = 1089

    Practice Next
    More No. System Questions
    ask-question