In the figure given, what is the value of ∠t?
30∘
40∘
50∘
60∘
In the given figure, ∠POR+∠ROS+∠SOQ=180∘ [Angles on a straight line] ⇒(t+10∘)+t+(t+20∘)=180∘
⇒(3t+30∘)=180∘
⇒3t=150∘
⇒t=50∘