=3:5;

0. 16:0.8

= 16:80

= 1:5;

Three quarters: five twelfth

=9:5;

3.6:4.2

=36:42

=6:7;

60 kg: 0.8 ton

=60:800

=3:40;

42 minutes: 2 o'clock

=42: 120

=7:20;

Second:

2 1: 105

=2 1:2 1×5

= 1:5;

7.2:0.42

=7.2× 100:0.42× 100

=720:42

= 120:7;

Five out of six: four out of nine.

=5/6× 18:4/9× 18

= 15:8

0.08:2

=0.08× 100:2× 100

=8; 200

= 1:25;

Three out of nineteen: 76

= 19/3:76

= 19/3: 19×4

= 1/3:4

= 1: 12;

3.75:0.625

=3.75× 1000:0.625× 1000

=3750:625

=750: 125

= 150:25

=6: 1

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