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Donna is 12 years younger than her brother. in 2 years she will be 14 years more than as half as her brother .how old is each now

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d = b-12
In two years,
(d+2) = 14 + (b+2)/2

d+2 = 14 + (d+14)/2
d/2 = 19
d = 38

So, Donna is 38, brother is 50
In 2 years, 40 = 52/2 + 14

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