Question

PR = ? 20 Р Q 30° 5y - 36 T 810 у 55° S 4x - 12 R

Answer 1

Given

Graph

Procedure

$\begin{gathered} 5y-36=y \\ 5y-y=36 \\ 4y=36 \\ y=\frac{36}{4} \\ y=9 \end{gathered}$

Now for PR

$\begin{gathered} PR=2\cdot y=2\cdot9=18 \\ PR=18 \end{gathered}$