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12 August, 16:07

Maggie's brother is 10 years younger than twice her age. The sum of their ages is 29. How old is Maggie? Maggie is ___years old.

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  1. 12 August, 19:03
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    Let M be the age of Maggie and B the age of her younger Brother:

    Rewrite the problem from English language to Math's:

    B = 2. M - 10 (1)

    and M + B = 29 (Given) OR B = 29 - M (2)

    Plug 2) into 1):

    29 - M = 2. M - 10

    29 + 10 = 3 M →→3M = 39 and M = 39/3 = 13

    Replace M by 13 and you will find B = 6

    Then Maggie = 13 year old and her brother B = 6 year old
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