Question

BD is a median . AB = 20 - x BD = 2x + 60 AC = 10x - 20

Answer 1

AC is 2 times AB, it means

$\begin{gathered} 10x-20=2(20-x) \\ 10x-20=40-2x \\ 10x+2x=40+20 \\ 12x=60 \\ x=\frac{60}{12} \\ x=5 \end{gathered}$

The value of x is 5