Answer:
K = 39.5
Step-by-step explanation:
We assume that when all the angles are added together they are equal to 360°, hence:
[tex]k + 3k + 87 + 115 = 360 \\ \\ 4k + 202 = 360 \\ 4k = 360 - 202 \\ 4k = 158 \\[/tex]
[tex] \frac{4k}{4} = \frac{158}{4} \\ \\ k = 39.5[/tex]
