Question 358989
Let R be the number of right answers, W for wrong answers.
1.{{{R+W=25}}}
2.{{{8R+(-3)W=110}}}
Multiply eq. 1 by 3 and add to eq. 2 to eliminate W.
{{{3R+3W+8R-3W=75+110}}}
{{{11R=185}}}
Something is wrong with the problem setup since 11 is not a factor of 185, you won't get an integer answer for {{{R}}} as required.
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17 right, 8 wrong would give Jess 112 points.
16 right, 9 wrong would give Jess 101 points.