Question

pq is a line on which c is a ray that intersects pq at o .angle cop is a and angle coq is b. now if a minus 2b=30 find a and b

Answer 1

15 is b because if we divide 30 by 2 it will give us 15

Answer 2

From the given question we understand that
a + b = 180 ( equation 1 )
and also a - 2b = 30 ( equation 2 )
so substracting ( equation 2 ) from ( equation 1 ) we get
3b = 150
So b = 50 and
a + b = 180
so a = 180 - b
= 180 - 50
= 130
So, a = 130 and b = 50