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4 March, 03:21

Your are y years old. Your sister is 3 years older than you. Your uncle is 4 times older than your sister. Write and simplify an expression that represents your uncle's age.

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  1. 4 March, 03:44
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    4y + 12 years

    Step-by-step explanation:

    Your age is specified as y years.

    Your sister is older than you by 3 years. Expressing sister's age mathematically, it is equal to (y + 3) years

    Your uncle's age is four times your sister's age.

    Hence uncle's age = / [4 * (y+3) / ] years

    Simplifying, uncle's age = / [ (4*y + 4*3) / ] years

    In other words, uncle's age = / [ (4y + 12) / ] years

    Hence the required age of the uncle can be represented as 4y + 12 years.
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