Question

4,8:12; 13,6:16; 0,8:20;
0,35:7; 0,54:9; 0,72:4.
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Answer 1

4,8:12=0,4; 13,6:16=0,85; 0,8:20=0,04.

0,35:7=0,05; 0,54:9=0,06; 0,72:4=0,18.