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Q: Johns average score on three tests is 87 percent What is the least he can score on his fourth test so that his average grade will be at least 90 percent?

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Grade average of 89 percent and 93 percent averages 91% or an A-.

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9 or 10.

If a student has a 78 percent grade their GPA (Grade Point Average) would be a 2.3. This figures out to be a C+ average.

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If Your test grade avearge is 57 and your assignment grade is 75 and the test grade counts for 75% and asignment 25%, then your grade is .75 (57) + .25(75) = 61.5

[(100x60) + (Tx40)]/100=Average, where T is you average on the other 40% of your grade. Example: your grade average is 90 before the test. You get a 100 on the big test. [(100x60) + 90x40)]/100 = [6000 + 3600]/100 = 96

90+10 divided by 2=50

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