Answer:
it is impossible she gets a 75% because as far as we know she can only score a maximum of 100 and she needs a 103
Step-by-step explanation:
We're going to assume that alice got a 68 on all 4 of her science exams
which means that so far we have[tex]\frac{68+68+68+68}{4}=68[/tex]
And we need to find out if she can get a 75 which means that we have the following
[tex]\frac{68+68+68+68+x}{5}=75[/tex]
Solve for x
272+x=375
x= 103
Therefore (unless there is extra credit available in the exam) it is impossible she gets a 75% because as far as we know she can only score a maximum of 100
