I got an 80% in my first exam. How much do I need to get in the remaining 5 exams to get above 91?

Answer 1

Assuming all exams are weighted equally, then you want the average of all of your exams to equal 0.91. Thus, we have

(0.80 + 5x)/6 = 0.91, where x is the average score on the remaining five exams. We now simply solve for x.

0.80 + 5x = 5.46

5x = 4.66

x = 0.932

So you need an average of 93.2% on your remaining exams to get a 91% overall.