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    Question

    The sum and product of two numbers are 18 and 72,

    respectively. If 'b' represents the sum of their reciprocals, then which of the following is true.
    A b is more than 0.50 Correct Answer Incorrect Answer
    B b is less than 0.25 Correct Answer Incorrect Answer
    C b is less than 0.5 Correct Answer Incorrect Answer
    D b is more than 0.5 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, Let the numbers be x and y. Given, x + y = 18 and xy=72. According to the question, b = [(1/x)+(1/y)] = {(x+y)/xy} So, b = 18/72 = 0.25, which is less than 0.5.

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