Quantitative Aptitude :: Problems on Ages - Discussion

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Explanation:
Lets sharla present age = x year.

So as per the question:
x = (5/4)*(x - 6)
=> 4x = (5x - 30)
x = 30 years.

So her daughter age = 30/5 years = 6 years.

After 6 years their ratio will be = 36/12 = 3:1