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Math Help - Need average please

  1. #1
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    Need average please

    I'm having trouble figuring out how to get the gpa.

    In a college, some courses contribute more towards an overall GPA than other courses. For example, a science class is worth 4 points; mathematics is worth 3 points; history is worth 2 points; and English is worth 3 points. The values of the grade letters are as follows, A= 4, B=3, C=2, D=1, F=0. What is the GPA of a student who made a C in Trigonometry, a B in American History, an A in Botany, and a B in Microbiology?
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  2. #2
    MHF Contributor Calculus26's Avatar
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    you can think of the points as credit hours

    take sum(pts*grade)/sum(pts)

    = (trig + hist + bot + micr)/13

    =( 3*2 + 2*3 + 4*4 + 4*3)/13

    = 40/13

    = 3.08
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  3. #3
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    Thanks. I get it now.
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  4. #4
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    GPA = sum((subject credit).(subject grade))/Total Subject credit
    = (2.3+3.2+4.4+3.4)/(2+3+4+3) = 40/12 = 3.33
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