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Question: The Computer Science Department had 24 students in the year 2002. If 10 of these students failed, then how many students graduated?


A ) 18
B ) 10
C ) 14
D ) 34

Steps to derive

1 Let s be the number of students, who graduated.

 [Write an equation.]
2 s + 10 = 24

 [Subtract 10 from each side.]
3 s + 10 - 10 = 24 - 10

 [Simplify.]
4 s = 14

5 The number of students who graduated is 14.



Hence the right answer is Option C

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