Ahigh school mathematics teacher can grade a set of exams in 5 hours working alone. if their student teacher them, it will take them 3 hours to grade the exams together. how long would it take the student to grade them exams if they worked alone?

type your answer rounded to two decimal places below
it would take the student teacher hours to grade alone.

7 hours

Step-by-step explanation:

Well, i'm not entirely sure about the answer, but if the high school teacher can do it in 5 hours and if the teacher does it with the student teacher in 3 hours (2 hours less) then instead of subtracting add 2 hours to the student teacher which would be a total of 7 hours.

homozygous. one is homozygous, while two is heterozygous.