Acompany is hiring people to read through all the comments posted on their website to make sure they are appropriate. four people applied for the job and were given one day to show how quickly they could check comments.

person 1 worked for 210 minutes and checked a total of 50,000 comments.

person 2 worked for 200 minutes and checked 1,325 comments every 5 minutes.

person 3 worked for 120 minutes, at a rate represented by c = 331t, where c is the number of comments checked and t is the time in minutes.

person 4 worked for 150 minutes, at a rate represented by t = (3/800)c.