Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Mr. McNeely takes a register of the total number of students present in class every day. On a particular week, the number of students in the class on the second day was 40 more than the first day. The number of students who didn't turn up for the class on the second day was twice the number of students who didn't turn up on the third day. On the third day, 1/7 of the total number of students of the class called in sick. If the total number of students in the class is 280, calculate the number of absent students in the three days.

### Response:
 Siku ya tatu, 1/7*280 = <<1/7*280=40>>40 wanafunzi walikuwa wagonjwa.
Idadi ya wanafunzi ambao hawakuhudhuria darasani siku ya pili ilikuwa mara mbili ya idadi ya wanafunzi ambao hawakuhudhuria siku ya tatu, ambayo ni 2*40 = <<2*40=80>>80.
Idadi ya wanafunzi waliohudhuria katika siku hizo tatu ni 280, 280-80 = 200, na 200-40 = 160.
Ikiwa wanafunzi 40 waliwahi kufika darasani siku ya kwanza kuliko siku ya pili, basi 280-80 = 160.
Idadi ya wanafunzi ambao hawakuhudhuria darasani siku ya kwanza ni 160- 40 = <<160-40=120>>120.
Katika siku hizo tatu, idadi ya wanafunzi ambao hawakuhudhuria ni 120+80+40 = <<120+80+40=240>>240.