4) Во второй день:3/8-1/6= 9/24-4/24=5/24
за два дня: 5/24+9/24=14/24=7/12
5) 21/27; 24/27 - 22/24; 23/24
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4) Во второй день:3/8-1/6= 9/24-4/24=5/24
за два дня: 5/24+9/24=14/24=7/12
5) 21/27; 24/27 - 22/24; 23/24