p || q || r and y : z = 7 : 8 . What is x?

Question

Answer 1

y/z =7/8

7z = 8y

y= 7z/8

y+z = 180, y+x=180, x=z

7z/8+8z/8 = 180

15z/8 = 180

z =(8/15)180 = 8(12) = 96 degrees

x=z= 96 degrees

x=96 degrees

y=180-96= 84 degrees

84/96 =7/8= y/z