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An instructor counts homework as 1/3 of the student's grade and the final exam to be 2/3 of the student's final grade. Going into the final exam a student has a homework grade of 48%. What range of scores on the final exam would put the student's final average between 70% and 80% inclusive if the instructor does not round off grades?
What is the range of the final exam scores?

  • math - ,

    1/3 of 48=16 points

    He wants a 80 or 70

    He needs 64 to 54 more points

    so he needs to get on his final exam

    3/2*64 to 3/2*70

  • math - ,

    Probability

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