In a certain week, Mr. McNeely records the attendance of students in his class every day. On the second day, the number of students present was 40 more than on the first day. Additionally, the number of students absent on the second day was twice the number of students absent on the third day. On the third day, 1/7 of the total number of students in the class were absent. If the total number of students in the class is 280, how many students were absent on each of the three days? Let's think step by step and output the final answer within \boxed{}.
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