These numbers are worth 20 percent of a persons grade
85, and 80
87 is worth 25 percent of the persons grade
and 88 is worth 25 percent of a persons grade.
What number grade does the person end up with?
2007-12-11 15:29:22 · 3 answers · asked by smiles 2 in Science & Mathematics ➔ Mathematics
the last 10 percent is given already. Just assume there is 10 pecent.
2007-12-11 15:44:04 · update #1
I can't make heads and tails of these data. Sorry, I could answer this if only it's presented clearer than how it is presented now.
Maybe it could be approached this way:
= 0.2 + 0.2 + 0.25 + 0.25
= 0.9
Assuming that the grade range is between 0 and 100:
= (0.2[85 + 80] + 0.25[87] + 0.25[88])/0.9
= (0.2[165] + 21.75 + 22])/0.9
= (33 + 21.75 + 22)/0.9
= 76.75/0.9
= 85.28
Answer: he ends up with 85.28 number grade
2007-12-11 15:35:52 · answer #1 · answered by Jun Agruda 7 · 3⤊ 0⤋
You got a solid 100% on your homework, hmmm?
.2(85+80) + .25(87+88) = 76.75 + .1(100) = 86.75
2007-12-12 00:12:18 · answer #2 · answered by Hate the liars and the Lies 7 · 0⤊ 0⤋
You have a math problem, with your math problem.
20
20
25
25
Add up to 90% So there is no answer to your problem until you account for the last 10%
2007-12-11 23:42:33 · answer #3 · answered by Rich 7 · 0⤊ 0⤋