Answer: Fourth option is correct.
Step-by-step explanation:
Since we have given that
Measure of one angle = x°
Measure of another angle = (4x-20)°
Since both the above angles are linear pair.
And sum of linear pairs is supplementary.
So, it becomees,
[tex]x+4x-20=180^\circ\\\\5x-20=180^\circ\\\\5x=180+20\\\\5x=200\\\\x=\dfrac{200}{5}\\\\x=40^\circ[/tex]
Hence, Fourth option is correct.
