4/10

2/10

5/7

6/12

3/8

8/18

10/20

7/14

7/18

0.4

40%

0.2

20%

0.5

50%

37.5%

0.375

50%

0.5

50%

0.5

0.71

71%

0.44

44%.

0.38

38%