Question

What is the value of y?
A. 400
B. 30
C. 60°
D. 500

Answer 1

2y°+y+10°+50°=180°[by sum of angles of triangle is 180°]

3y + 60°=180°

3y=180°-60°

3y=120°

y=120/3

y=40

option a.