In 1984. Tolu was 24 years old and his ratner 45 years, In what year was Tolu exactly half his father's age?
A. 1982 B. 1981 C. 1983 D. 1979. E. 1978
Correct Answer: B
Explanation
In 1984 Tolu's age \(=24\). Father's age \(=45\) \(x\) years ago. father's age \(=45-x\), Tolu's age \(=24-x\) If Tolu was exactly half his father's age in \(x\) years, then \begin{aligned} \frac{45-x}{2} &=24-x \\ 45^{2}-x &=2(24-x) \\ 45-x &=48-2 x \\ x &=48-45=3 \end{aligned} Thus, Tolu was'exactly half his father's age in the last three years \(1984-3=1981\)