Age of girl riddle
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A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father.
How old is the daughter now ? 
Best answer
Her current age is 50
if the brother’s age is x, sister’s age is 2x and the father’s age is 4x
and after 50 years brother’s age become half of the father’s age so
x+50=(4x+50)/2
by solving this we get brother’s current age as 25, sister’s age as 50, father’s age as 100.
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