I have a 92% right now in world history and that counts for 80% of my final grade. The other 20% of my final grade is my Final Exam grade. What do i need on the final exam to get a Final grade about 90%
2007-05-31 14:30:37 · 5 answers · asked by ghafoors2005 1 in Science & Mathematics ➔ Mathematics
You need an 82% score to get the 90% overall score.
92X.8=73.6
82X.2=16.4
73.6+16.4=90
2007-05-31 14:38:40 · answer #1 · answered by nitr0bike 4 · 0⤊ 0⤋
You need an 82%.
It is found in the following equation if x equals your exam grade:
(.80)(92) + .20x = 90
2007-05-31 21:36:12 · answer #2 · answered by niels bohr 2 · 0⤊ 0⤋
final grade is 92(.80) + x(.20), thus
.2x + 73.6 = 90
and .2x = 90 - 73.6 = 16.4
thus x = 16.4/ .2 = 164/2 = 82
2007-05-31 21:37:02 · answer #3 · answered by ? 3 · 0⤊ 0⤋
92 x 0.8=73.6
90-73.6=16.4
16.4 x 5= 82
you need to get a score of at least 82 on your final exam. :)
2007-05-31 21:35:12 · answer #4 · answered by heythere 3 · 0⤊ 0⤋
0.90 = 0.92*0.80 + 0.20x
x = 0.82 or 82%
.
2007-05-31 21:49:34 · answer #5 · answered by Robert L 7 · 0⤊ 0⤋