Help me calculate the percentage?

Hi, please calculate my final percentage

three exams each worth 20%

my percentages:

52%

46%

52%

What is the lowest grade I need to get on the last exam (worth 40% of final grade) to get 61% average for my final grade?

A: 100% - 86%

B: 85% - 76%

C: 75% - 61%

D: 60% - 45%

F: 44% - 0%.

Thanks!

20 Answers

Relevance
  • 1 decade ago
    Favorite Answer

    The minimum grade you could get is a 78.

    78 x 4 = 312

    52 x 2 = 104

    46 x 2 = 92

    52 x 2 = 104

    added together = 612 divided by 10 = 61.2 would be your final grade if you got a 78 on your last exam.

    and to the clowns that posted that 61 was a "D" may need to take their own advice. It appears they need to lay off of you and get into their own books.

    Hope this helps.

  • 1 decade ago

    take 52 times .2

    etc

    since each is worth 20%

    exams

    1 = 10.4

    2 = 9.2

    3 = 10.4

    total = 30

    you want a 61... 61 - 30 = 31

    so you want AT least 31 from your percentage on final

    If you get 90% take 90 x .4 = 36 close

    86 x .4 = 34.4

    78 = 31.2 VERY CLOSE

    77 = 30.8

    looks like you need a 77% or above to get a 61%

  • 1 decade ago

    the highest score for each exam is 100 points for the first 3 exams.

    the last exam is worth double...200 points.

    if you got every question right, you'd have 500 total points.

    to get a 61%, you need 305 points total (500 x 0.61= 305)

    so far, you have 150 points so you need 155 points for the last exam.

    since the last exam is double you need to divide this in half to find the percentage that you need... 77.5

    GOOD LUCK, hope you get the score you need.

  • 1 decade ago

    easiest to work out if u count the last paper as two, each worth 20%

    (52 + 46 + 52 + 2x)/5 = 61

    150 + 2x = 305

    2x = 155

    x = 75.5%

    think u need 75.5% to get ur 61% average

  • How do you think about the answers? You can sign in to vote the answer.
  • Anonymous
    1 decade ago

    To answer your question, you need to pull a 77.5 to get a 61.

    Basically, a B on the final should give you a D overall.

  • Anonymous
    1 decade ago

    To get an exact grade of 61, you need a 77.5% (B) on your last exam.

    Good luck and hope you make your goal.

    Source(s): APCALC
  • 1 decade ago

    .2(52) + .2(46) + .2(52) + .4(x) = 61

    10.4+9.2+10.4+.4x = 61

    30 + .4x = 61

    .4x = 31

    x = 77.5

    If you score higher than a 77.5 you will get higher than a 61. But I can see math is no your forte......

  • Anonymous
    1 decade ago

    ud need about 27% on the last grade to pass with a 61

  • Anonymous
    1 decade ago

    wow u have the lowest grading scale ive ever seen and 86 would be a c for me and all of the grades u got would be fs.

  • 1 decade ago

    Aim for something higher than a D.

Still have questions? Get your answers by asking now.