180 over 100 is the same as
18 over 10 which is the same as
9 over 5 which is the same as
1 and 4 over 5 (1 and a four fifths) which is the same as
1.8
100/180 = 5/9
9/5
16/180 = 4/45
9/180 = 1/20
180/210 = 6/7
15/180 = 1/12
It is 2 over 3.
2/5 keep dividing it until its to its simplest form :)
8/45
11/90
18/55
1/18