Answer:
Value of y = 40°
Right option is C . 40°
Step-by-step explanation:
We have given a triangle
Three angle of triangle given as 2y , y+10° and 50°.
Angle sum of triangle is 180°
i.e 2y + ( y + 10°) + 50° = 180°
or 3y + 60° = 180°
or 3y = 180° - 60°
or 3y = 120°
or y = 40°
