Thread: Very easy percentage question, cant remember how to solve it! :(

Ok so I took an exam, and they said I got a 53% on it, but when I add up all the percentages and divide by the number of categories, I get a 57% (55% is passing). So can someone tell me what the total percentage (score) of all these categories are? I know this is elementry but I just want to double check before I call them

These are each of the sections of the exam and what I scored:
1) 75%
2) 53%
3) 50%
4) 50%
5) 20%
6) 100%
7) 50%
8) 75%
9) 0%
10) 100%

Thank you so much for the help!

Originally Posted by coachscore

Ok so I took an exam, and they said I got a 53% on it, but when I add up all the percentages and divide by the number of categories, I get a 57% (55% is passing). So can someone tell me what the total percentage (score) of all these categories are? I know this is elementry but I just want to double check before I call them

These are each of the sections of the exam and what I scored:
1) 75%
2) 53%
3) 50%
4) 50%
5) 20%
6) 100%
7) 50%
8) 75%
9) 0%
10) 100%

Thank you so much for the help!

If each section carries equal weight then take the mean:




If each section does not carry equal weight then it's more complicated:



Where are the percentage of the total expressed in decimal/fractional from for questions 1 to 10 respectively

Ok, your first problem was my exact thinking, which brought me to 57.x.

I get the same answer when I evaluated the first equation. Perhaps a mistake was made?

I can only hope! I will call them now.