Question

In the adjoining figure, seg $AD$ is the bisector of $\angle BAC$. Find $x$ from the other information shown in the figure.

Answer 1

We know that

$\begin{array}{c}\frac{15}{10}=\frac{18}{x}\\ x=\frac{18\times 10}{15}\\ =6\times 2\\ =12\end{array}$

Hence, this is the answer.