SOLUTION: Cody bought nine CDs. A week later half of all his CDs were lost during a move. There are now only 21 CDs left. With how many did he start?

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Question 1193253: Cody bought nine CDs. A week later half
of all his CDs were lost during a move.
There are now only 21 CDs left. With
how many did he start?
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
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Cody bought nine CDs. A week later half
of all his CDs were lost during a move.
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The two first sentences stand on their own.


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There are now only 21 CDs left.
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No there are not.

Answer by ikleyn(52810) About Me  (Show Source):
You can put this solution on YOUR website!
.

Let x be the number of CDs originally.


The problem says that

    %28x+%2B+9%29%2F2 = 21.


Simplify and find x 

    x + 9 = 42

    x     = 42 - 9 = 33.


ANSWER.  Originally, there were 33 CDs.

Solved.