You need more than one number to find an average.
"pp" can stand for "pages" in document formatting. So, "60 pp" would mean 60 pages.
Arithmetic mean = (60+85)/2 = 145/2 = 72.5 Geometric mean = sqrt(60*85) = 71.41 approx.
If you mean 25% of 60 then it is 15
-20
60 mins mins mean minutes
If you mean 11/60, it cannot be simplified.
50 to 60 years after the death of jesus
It means 60 miles travelled in 1 hour
If you mean as a percentage then it is 20%
You mean what is 6 times 60 ??? Then the answer would be 360
60
60 sec