Question 293175

a=answered
n=not answered
r=right
w=wrong

a+n=100
r+w+n=100
9r-5w=0
9r=5w
r=5/9*w
If numbers must be integers then
n=2 w=63 r=35
98 answered wrong 63 and right 35 not answered 2

If fractional numbers are allowed then 
total answered is 100 
and w=64.2857 
and r=35.7143
and n=0