1990 AJHSME Problems/Problem 9
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Problem
The grading scale shown is used at Jones Junior High. The fifteen scores in Mr. Freeman's class were: ![\begin{tabular}[t]{lllllllll}89, & 72, & 54, & 97, & 77, & 92, & 85, & 74, & 75, \\63, & ...](http://alt1.artofproblemsolving.com/Forum/latexrender/pictures/3/7/a/37a9d317495f54d085212c57a4fbad29d753d82a.gif)
In Mr. Freeman's class, what percent of the students received a grade of C?
![\boxed{\begin{tabular}[t]{cc}A: & 93 - 100 \\B: & 85 - 92 \\C: & 75 - 84 \\D: & 70 - 74 \\F: & 0 - 69 \en...](http://alt1.artofproblemsolving.com/Forum/latexrender/pictures/6/2/f/62fa9aafe53854ea31c365127c3531de0054d7c7.gif)
Solution
We just count to find that there are 
students in the 
range.
There are 
total, so the percentage is 
.
See Also
| 1990 AJHSME (Problems • Resources) | ||
| Preceded by Problem 8 | Followed by Problem 10 | |
| 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | ||
