Question

Mark (✓) against the correct answer
In the given figure, what value of x will make AOB a straight line?



(a) x = 50
(b) x = 100
(c) x = 60
(d) x = 80

Answer 1

$$\begin{gathered} \left(d\right)x=80 \\ x+55+45=180(\mathrm{linear}\mathrm{pair}) \\ \Rightarrow \mathrm{x}=180-55-45 \\ \Rightarrow \mathrm{x}=180-100 \\ \Rightarrow \mathrm{x}=80 \end{gathered}$$