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23 April, 10:46

Rob is twice Joshua's age. Nick is 5 years older than Joshua. The sum of all their ages is 45. How old is Nick?

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  1. 23 April, 11:03
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    Given

    Rob is twice Joshua's age

    Nick is 5 years older than Joshua.

    sum of all their ages is 45.

    Find the age of nick.

    To proof

    As given

    Rob is twice Joshua's age

    let Joshua's age = x

    than Rob age = 2x

    Nick is 5 years older than Joshua.

    Nick age = 5 + x

    sum of all their ages is 45

    than the equation becomes

    Joshua's age + Rob age + Nick age = 45

    put the value

    x + 2x + 5 + x = 45

    4x = 40

    x = 10

    Joshua's age = 10 year

    than Rob age = 20 year

    Nick age = 5 + 10

    = 15year

    Hence proved
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