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    Question

    5 positive numbers are written on a piece of paper. Sum

    of first 3 numbers is 50 and ratio of the 4th and the 5th number is 2:3. If difference between the 4th and the 5th number is 10, then find the average of all the numbers.
    A 22 Correct Answer Incorrect Answer
    B 20 Correct Answer Incorrect Answer
    C 25 Correct Answer Incorrect Answer
    D 27 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Given, 4th number:5th number = 2:3 Let, 4th number = 2x 5th number = 3x So, 3x тАУ 2x = 10 Or, x = 10 Required average = {(50 + 10 ├Ч 2 + 10 ├Ч 3)/5} = (100/5) = 20

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