Question

what is the value of x? o 20 o 35 o 60 o 70

Explanation:

Step1: Identify angle - relationship

Vertical angles are equal. $\angle TRV$ and $\angle SRW$ are vertical angles, so $x + 40=3x$.

Step2: Solve the equation

Subtract $x$ from both sides: $40 = 3x - x$.
Simplify the right - hand side: $40 = 2x$.
Divide both sides by 2: $x=\frac{40}{2}=20$.

Answer:

A. 20