The sum of the ages of a mother, son, and daughter is 70 years. If the mother is thrice as old as her son, and the daughter is 5 years older than her brother, how old is the mother?
39 years
The correct answer is Option 3 i.e. 39 years.
Let the son's age be x
Mother's age = 3x
Daughter's age = x + 5
⇒ 3x + x + (x + 5) = 70
⇒ 5x + 5 = 70
⇒ 5x = 65
⇒ x = 13
Mother's age = 3x = 39 years
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