If m AOC=85, m BOC =2x+10, and m AOB=4x-15, find the degree measure of BOC and AOB

Answer:
angle AOC=85
also
angle AOC = angle AOB + Angle BOC
85= 2x+10+4x-15
or, 6x= 90
x=15
BOC=2x+10= 2*15+10=40
angle AOB = 4x-15=4*15-10=5=45