Andrew had 4 children. One of his children was found to be dead due to some accident. At this time the average age of all his 4 children was 16 years. What will be the average age of the remaining children of Andrew, after a time period of 7 years of the death of his child?

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Andrew had 4 children. One of his children was found to be dead due to some accident. At this time the average age of all his 4 children was 16 years. What will be the average age of the remaining children of Andrew, after a time period of 7 years of the death of his child?

Default Asked on December 5, 2017 in Mathematic.
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1 Answer(s)

    Thank you very much for your question. I’m very glad to know that you have come to a question-answer website to solve your problem. That means, you have a strong will to learn this math. I really appreciate it. Thank you again.

    Your question is – Andrew had 4 children. One of his children was found to be dead due to some accident. At this time the average age of all his 4 children was 16 years. What will be the average age of the remaining children of Andrew, after a time period of 7 years of the death of his child?

    I have solved this problem thus, you can read my Explanation for your better understanding:

    According to  the question,
    Total number of children Andrew had = 4 …..i
    The average of all his 4 children = 16 years …..ii

    ∴ The sum of the ages of all his 4 children = 16*4 = 64 …..iii

    And, sum of the ages of children after the death of 1 child = 16*3 = 48 …..iv

    Now, sum of the ages of the remaining children after 7 years of the death of 1 child of
    Andrew = 48 + (3*7) = 48+21 = 69 …..v

    Thus, the average age of his remaining 3 children after 7 years of death of his 1 child =
    69/3 = 23 …..vi

    Thanks. You can also visit my website – Bank Insurance World

    Brong Answered on December 5, 2017.
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