x is greater than or equal to 5 and less than or equal to 10.
Now x is given, which is 9 and y = 20(9)
y = 180.
Is y > 80?
If yes then z = y+ 20.
If no then z = y - 10.
The solution we got for y is 180 and is greater than 80, so above statement is true.
z = y + 20
z = 180 + 20
z = 200
Answer: 200