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11 September, 07:21

a father is now 38 years older than his son. Ten years ago he was twice as old as his son. let x represent the age of the son now.

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  1. 11 September, 07:41
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    The present age of father is 86 years old and present age of son is 48 years old

    Solution:

    Given that, a father is now 38 years older than his son

    Ten years ago he was twice as old as his son

    Let "x" be the age of son now

    Therefore, from given,

    Father age now = 38 + age of son now

    Father age now = 38 + x

    Ten years ago he was twice as old as his son

    Age of son ten years ago = age of son now - 10

    Age of son ten years ago = x - 10

    Age of father ten years ago = 38 + x - 10

    Then we get,

    Age of father ten years ago = twice the age of son ten years ago

    38 + x - 10 = 2 (x - 10)

    28 + x = 2x - 20

    2x - x = 28 + 20

    x = 48

    Thus son age now is 48 years old

    Father age now = x + 38 = 48 + 38 = 86

    Thus present age of father is 86 years old and present age of son is 48 years old
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