Question
The ratio of the ages of mother to that of daughter is 7:3 today. After 5 years, this ratio would be 2:1. How many years old should the mother be at the time of birth of her daughter?
Answer: Option B
- Let the ages of mother and daughter today be “7X” and “3X” years respectively.
Thus, 5 years, hence, we get,
7X + 5 = 2 3X + 5 1 X = 5
Thus, the age of mother today is 35 years and that of daughter’s today is 15 years, Hence, at the time
of birth of her daughter, mother should have been (35-15) = 20 years old.
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- Let the ages of mother and daughter today be “7X” and “3X” years respectively.
Thus, 5 years, hence, we get,
7X + 5 = 2 3X + 5 1 X = 5
Thus, the age of mother today is 35 years and that of daughter’s today is 15 years, Hence, at the time
of birth of her daughter, mother should have been (35-15) = 20 years old.
Was this answer helpful ?
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