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admin
04-02-2010, 02:42 PM
ANSWER :

Find a common denominator for 3, 4, 6 and 8.
The only common denominator smaller than 30 is 24.
Therefore, the class size was 24 and the grades were :

B: 8
B-: 6
C: 4
D/F: 3

The number of students who received A`s was 3
(24 - 21)

admin
04-02-2010, 02:44 PM
click here to see the puzzle question (http://www.nidokidos.org/grade-puzzle-t43497.html)