Q no 2 plz answer fast

Let a and b be x
Therefore 2x+3x
Angle xom+mop+poy=180
2x+3x+90=180
5x=180-90
5x=90
X=90/5
X=18
2x=2*18=36
3x=3*18=54

Line xo on line mn
Xom+xon=180 ......linear pair
36+xon=180
Xon=180-36
Xon=144