I need help finding this inequality to calculate needed pts to earn my goal grade. Will someone please help!?

Question

We have had 4 exams so far. we have 3 left including the final as two of the three. each exam was worth 125 pts the final is 250. On the 4 exams I recieved: 82%,82%, 60%, and 78%. How do I plug in these numbers into an inequality to find the minimum number of points needed on the subsequent exams for an A, B, C, D?

Answer 1

It all depends on what percent you need for each grade range.

So far you have taken 4 exams each worth 125 pts.
82% x 125 pts = 102.5 pts
82% x 125 pts = 102.5 pts
60% x 125 pts = 75 pts
78% x 125 pts = 97.5 pts

That means you have scored 377.5 pts out of a possible 600 pts.

You have an additional 600 pts (2 exams, 1 final).

Currently you have an average of 77.5%
If you do nothing, you'll end up with 377.5 pts out of a possible 1200 = 31.46% which would definitely be failing.

If you ace all the remaining exams, you'll have 977.5 pts out of a possible 1200 = 81.46%

90+ is generally an A
80+ is generally a B
70+ is generally a C

So I don't think you can do any better than a low B (e.g. B-) and are more likely going to get a C.

The inequality would depend on the percentages for each grade level, but let's say your school requires at least 90% (0.90) for an A, 80% (0.80) for a B, 70% (0.70) for a C and 60% (0.60) for a D.

Then you would have:
(377.5 + points for an A) / 1200 ≥ 0.90
(377.5 + points for a B) / 1200 ≥ 0.80
(377.5 + points for a C) / 1200 ≥ 0.70
(377.5 + points for a D) / 1200 ≥ 0.60

Edit:
Note, if you solve these for the points you get:
points for an A ≥ 0.90 * 1200 - 377.5
points for an A ≥ 702.5 (not possible)

points for a B ≥ 0.80 * 1200 - 377.5
points for a B ≥ 582.5 (approx. 97% or better on remaining tests)

poinrts for a C ≥ 0.70 * 1200 - 377.5
points for a C ≥ 462.5 (approx. 77% or better on remaining tests)

poinrts for a D ≥ 0.60 * 1200 - 377.5
points for a D ≥ 342.5 (approx. 57% or better on remaining tests)

Answer 2

82% of 125 = 102.5pt
60% of 125 = 75pt
78% of 125 = 97.5pt
You have 377 points so far.

Course grade calculated from accumulated pts÷1000 pts (the maximum)
Calculate the total points you need to for each grade level.
For example, if an A is 90%+ then you need
90%*1000=900 points total
900-377 = 523+ to get an A

If you got 100% on the next 3 exams you'd get 500 points, but that is not enough for an A.

What topics were on the third exam?

Answer 3

Actually,

Different Schools Have Different Grading Systems..


Sorry :[