(1)6:2/5 =15:1
(2) 3/4:7/8 =6:7
(3) 2/5:3/8 =16:15
(4) 3/8:5/6 =9:20
(5) 4/7:7/8 =32:49
(5)5/7:5/6 =6:7
(6) 7/10:6 =7:60
(7) 3/7:15 =1:35
(8) 3/11:2/33=9:2
(9) 0.02:1/4 =2:25
(10) 3/10:1/3 =9:10
(11) 7/9:11/18 =14:11
(12) 3/8:1/8=3:1
(13) 1/3:2/3 =1:2
(14) 3:4/7 =3:28
(15) 5/8:6/5 =25:48
(16) 3/10:3/4 =5:2
(17) 7/9:5/6=14:15
(18) 2/9:0.5=4:9
(19) 3/13:2/39 =9:2