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27 February, 06:48

The Wilsons have triplets and another child who is thirteen years old. The sum of the ages of their children is 31. How old are the triplets?

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  1. 27 February, 07:13
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    The age of each triplet if 6 years.

    Step-by-step explanation:

    Let us assume the age of first child in triplet = m years

    Since, the children are triplet, so age of 3 children are SAME.

    ⇒The age of second child in triplet = m years

    and, The age of third child in triplet = m years

    Also, the age of fourth children = 13 years

    So, sum of age of all four children =

    Sum of age of all triplets + Age of fourth child = m + m + m + 13 = 3 m + 13

    Given: The sum of the ages of their children is 31.

    ⇒ 3 m + 13 = 31

    or, 3 m = 31 - 1 3 = 18

    or, m = 18/3 = 6

    or, m = 6 years

    Hence the age of each triplet if 6 years.
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