Answer :
We can calculate the average by dividing the total point by the total period.
We start by expressing the period in minutes, that is a mixed number, in fractional form:
[tex]5+\frac{5}{6}=\frac{5\cdot6+5}{6}=\frac{30+5}{6}=\frac{35}{6}[/tex]Then, we can divide the total score by this number:
[tex]\frac{28}{35\text{ / }6}=28\cdot\frac{6}{35}=\frac{168}{35}=4.8[/tex]He averaged 4.8 points per minute.