Question 1119085
r, right---------- 2 points earned
w, wrong---------- 1 point loss
{{{system(r+w=25,2r-w<45)}}}

-

{{{2r<45+w}}}

{{{r<45/2+w/2}}}

{{{r<45/2+(25-r)/2}}}

{{{r<45/2+25/2-r/2}}}

{{{r+r/2<35}}}

{{{(3/2)r<35}}}

{{{r<(2/3)35}}}

{{{highlight(r<23)}}}--------whole value only; next greater value is too large.