Answer:
B
Step-by-step explanation:
let the point where ∠t° is made be O and point where ∠35 be P
the given figure is square in a square every angle is 90°
therefore ∠D=∠C= 90°
in triangle DOP, ∠DOP= 180-(50+35)= 95°
also in triangle ∠CDO= 90-50= 40°
∠DCO= 90-60= 30°
and then ∠DOC= 180-(40+30)= 110°
now 115°+∠POD+∠DOC+t°=360 (angle at a point)
115+110+95+t=360
⇒t= 40°
hence option B is the correct answer
