Mr. yoshikawa has 75 papers he graded 60 of them and his student graded the rest. how do you show what percent each graded

If you want to know what percent did Mr. Yoshikawa graded you can say:
60/75 = ?/100 so ? is: 
60*100/75 = 80 % so he graded 80% of the papers and the rest of the papers was graded by his student so: 
100% - 80% = 20% so his student graded 20% of the papers :)))
i hope this is helpful 
have a nice day 

M< 5 = 80 , < 2 = 80, < 6= 100, < 3= 100, < 7= 80, < 4= 80, < 8= 100