Respuesta :

Answer:

Divide 16 1/2 and 5.

16 1/2 in decimal form is 16.5 so divide it by 5 and you get 3.3 or 3 and 3/10 in fraction form.

Her average work day was 3.3 hours.

Mary's average work day is 3.3 days.

Given that, Mary put in a total of 16 1/2 hours mowing lawns during 5 days the past week.

We need to find out how long was her average work day.

What is a unitary method?

It is a method where we find the value of a single unit from the value of multiple units and the value of multiple units from the value of a single unit.

Now, 16 1/2=16.5

The number of hours per day=16.5/5=3.3 days

Therefore, Mary's average work day is 3.3 days.

To learn more about the unitary method visit:

https://brainly.com/question/23423168.