5/ 10= 1/2

8/ 16= 1/2

6/9=2/3

15/ 10=3/2

7/2 1= 1/3

9/ 12=3/4

17/5 1= 1/3

9/8 1= 1/9

25/50= 1/2

13/39= 1/3

Comprehensive score:

1/2+ 1/3=5/6

1/3+ 1/4=7/ 12

1/4+ 1/5=9/20

1/5+ 1/6= 1 1/30

1/6+ 1/7= 13/42

1/7+ 1/8= 15/56

1/8+ 1/9= 17/72

1/9+ 1/ 10= 19/90

1/ 10+ 1/20=3/20

1/20+ 1/30=5/60= 1/ 12