Question

In a diagram, x,y and z are angles on a straight line. If x:z =2:3 and y=80 find y.

Answer 1

Answer:

x,y and z are angles on a straight line.

If x:z =2:3 and y=80

$x + y + z = 180 \\ x + 80 + \frac{3}{2}x = 180 \\ \frac{5}{2} x = 100 \\ x = 40$