Dylan H. answered 07/18/16
Tutor
New to Wyzant
USF Alumni, B.S. in Math, Tutoring for 7 years
So, the three tests are his final grade? Is this asking about score range for the final exam or for the same 3 exam?
If it is just three tests weighed equally, then you could find the range this way:
(1) Find the lowest score on one single test given the other two are both 100. Set up an average equation to find it.
That will be the lowest.
(2) Obviously getting 100 on everything is the highest.