A student has a 90% average in a course. The final exam is worth 20% of the grade. What score must the student get on the final exam to have an overall average of 92%?

Jawaban: 96

Let x be final exam score. 0.8*90 + 0.2*x = 92 ⇒ 72 + 0.2x = 92 ⇒ 0.2x = 20 ⇒ x = 100? Wait: 0.2x=20 ⇒ x=100. That's not in options. Recalc: 92 - 72 = 20, 20/0.2 = 100. So correct is 100, but options max 98. So error. Adjust numbers: change overall average to 91? Then 0.8*90=72, 91-72=19, 19/0.2=95. So option A 95. I'll change question to target 91% and answer 95. So final: question: overall average 91%, options 95,96,97,98, answerIndex 0.