How do you figure this percentage out?

I am trying to figure out my grades for two of my exams...one of them is 52/60 and the other is 58/80...how do i turn these into percentages on a 100% scale?How do you figure this percentage out?
52/60=86.666666666666%





58/80=72.5%





Your average is (52+58)/(60+80)=110/140=78.57%.How do you figure this percentage out?
60 + 80 is your 100%


(52+58/60+80)* 100 is your percentage.


and it's 78.57
Divide 52 by 60. You find 0,8666.


Multiply by 100, it gives you 86,66 %
Divide the numerator by the denominator and multiply by 100.





52/60(100) = (approx.) 87%





58/80(100) = (approx.) 73%