Final answer:
The ratio of days in the week that do not begin with the letter T to days that do is 5 to 2, as two days begin with T (Tuesday and Thursday) and five days do not.
Step-by-step explanation:
The question asks for the ratio of the number of days in the week that do not begin with the letter T to the number of days in the week that do begin with the letter T. There are seven days in a week: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, and Sunday. Out of these, two days begin with the letter T: Tuesday and Thursday. The remaining five days do not begin with the letter T. Thus, the ratio of days not beginning with T (Monday, Wednesday, Friday, Saturday, Sunday) to days beginning with T (Tuesday, Thursday) is 5 to 2.