1. Ten years ago, the age of a mother was three times the age of her son. If the present age of the
mother is 45 years, what is the present age of the son?
Answer: b) 12 years
Explanation:Let the son's present age be x.
Ten years ago, the mother's age was (45 - 10) = 35.
At that time, the mother's age was three times the son's age: 35 = 3 * (x - 10).
Solving for x, we get x = 12.
Answer: b) 12 years
Explanation:Let the son's present age be x.
Ten years ago, the mother's age was (45 - 10) = 35.
At that time, the mother's age was three times the son's age: 35 = 3 * (x - 10).
Solving for x, we get x = 12.