New Enroll in RBI Gr B 2025 Exclusive New Batch on March 18

    Question

    The sum of two numbers is 20 and their product is 96.

    Find the numbers.
    A 12, 8 Correct Answer Incorrect Answer
    B 16, 4 Correct Answer Incorrect Answer
    C 10, 10 Correct Answer Incorrect Answer
    D 14, 6 Correct Answer Incorrect Answer

    Solution

    Let the numbers be x and y. x + y = 20 and xy = 96. Using the quadratic: x² - 20x + 96 = 0. Discriminant = 20² - 4*96 = 16. Roots are x = (20 ± √16)/2 = (20 ± 4)/2. This gives us x = 12 or 8. Correct answer: a) 12, 8

    Practice Next