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    Question

    When x is added to each of 2, 3, 30 and 35, then the

    numbers obtained in this order are in proportion. What is the second largest part in the proportion?┬а
    A 35 Correct Answer Incorrect Answer
    B 45 Correct Answer Incorrect Answer
    C 30 Correct Answer Incorrect Answer
    D 40 Correct Answer Incorrect Answer

    Solution

    Let the numbers be (2+x), (3+x), (30+x), (35+x). Given they are in proportion: (2+x)/(3+x) = (30+x)/(35+x) Cross-multiply: (x+2)(x+35) = (x+3)(x+30) x┬▓ + 37x + 70 = x┬▓ + 33x + 90 4x = 20 тЖТ x = 5 Parts: 2+5=7, 3+5=8, 30+5=35, 35+5=40 Second largest = 35.

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