If the class grade is 40% based on your project, and 60% on your exam, and the student gets an 86% on her project, what must she get on her exam to get an overall 90% in the class?
2006-08-28 13:02:49 · 10 answers · asked by Raquel S 1 in Science & Mathematics ➔ Mathematics
She must get a 92.7 or better to get an A for the class.
86 * 0.4 = 34.4
90 - 34.4 = 55.6
55.6 / 60 = 92.6666...
2006-08-28 13:08:53 · answer #1 · answered by RatherTallFella 4 · 0⤊ 1⤋
40% (or 4/10) of 86% is 34.4% of your grade. That leaves another 55.6% to get you a 90%. If you divide 55.6 by .6 you get 92.667%.
Therefore you need a 92.667% on the exam to get an overall 90% in the class.
2006-08-28 20:10:20 · answer #2 · answered by Habester 3 · 0⤊ 2⤋
70
2006-08-28 20:06:04 · answer #3 · answered by recmcmdc 6 · 0⤊ 3⤋
like around 70-90 or up !!!Thats pretty good.
2006-08-28 20:19:26 · answer #4 · answered by Teya 3 · 0⤊ 1⤋
.4x + .6y = .9
Since we have "x", let's plug it in.
.4x = .4 * .86
.4x = .344
So,
.344 + .6y = .9
Simplify:
.6y = .9 - .344
.6y = .556
Divide both sides by .6
.6y / .6 = .556 / .6
y = .556 / .6
y = .9267
So, she needs to get a 92.67% to get an overall 90%.
2006-08-28 20:12:25 · answer #5 · answered by Christopher C 3 · 0⤊ 2⤋
solve the problem like this:
.4x86%+.6xY=90%
34.4+.6xY=90%
.6xY=55.6
Y=92.667 rounded is 92.7%
2006-08-28 20:12:23 · answer #6 · answered by Common Sense 5 · 0⤊ 1⤋
i think you need to get like an 97
2006-08-28 20:08:20 · answer #7 · answered by Morgan P 2 · 0⤊ 2⤋
70ish
2006-08-28 20:08:28 · answer #8 · answered by Prep♥™ 5 · 0⤊ 2⤋
92.7
2006-08-28 20:09:55 · answer #9 · answered by IT Pro 6 · 0⤊ 2⤋
92.6
2006-08-28 20:09:41 · answer #10 · answered by raquel122203 4 · 0⤊ 2⤋