my friend sister is four times as old as her youngest brother After 5 years ,she will be twice as old as her brother find her brothers present age
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4x + 5 = 2(x + 5)
4x + 5 = 2x - 10
2x = 5
x = 5/2 = 2.5
Present age of brother = 2.5 years
The present age of sister = 4x = 10 years.
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