Question
After 5 years, Rahul's age will be one-third of his
father's present age. At present, if the ratio of his mother's age to his father's age is 7:9, and Rahul's present age is 10 years, then find his mother's present age.Solution
Rahul's age after 5 years = 10 + 5 = 15
This is one-third of his father's present age, so:
Father's present age = 15 Γ 3 = 45 years
Mother's present age = (7/9) Γ 45 = 35 years
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