Answer :
4. 9/20
5. 9/10
6. 3/20
8. 17/50
9. 79/100
10. 239/1000
12. 1/40
13. 1 6/25
5. 9/10
6. 3/20
8. 17/50
9. 79/100
10. 239/1000
12. 1/40
13. 1 6/25
9/20 , 9/10 , 3/20 , 17/50 , 79/100 ,239/1000 (or 23.9/100) , 1/400 (or 0.25/100) , 56/25 , 16/25