Question

Mary worked a total of 16 12 hours during 5 days of the past week. What was her average work day?Please,

Answer 1

Since Mary worked 16 1/2 hours in 5 days

Then to find her average in a day, we will divide the total hours by the number of days.

`\text{Ave}=(16(1)/(2))/(5)`

We will change the mixed number 6 1/2 to an improper fraction

`\begin{gathered} \text{Ave}=((16*2+1)/(2))/(5) \\ \text{Ave}=((33)/(2))/(5) \\ \text{Ave}=(33)/(5*2) \\ \text{Ave}=(33)/(10) \end{gathered}`

Then her average is 33/10 hour per day

We can change it to a mixed number

`\text{Ave}\mathrm{}=3(3)/(10)`

Her average is 3 3/10 hours per day

Since 1 hour = 60 min, then change the fraction 3/10 to minutes

`(3)/(10)*60=3*6=18\min`

Then her average is 3 hours 18 min per day