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# What was the percentage change in the simple average profit per car

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Re: What was the percentage change in the simple average profit per car [#permalink]
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Hoozan wrote:
EducationAisle if the overall profit increased by 70% then can't we say that the avg profit also increased by 70%?

Could you help solve this

Thing is that the question is asking for average profit "per car sold".

Since the "number of cars sold" were obviously different in 2000 and 2009, we need to take "number of cars sold" into consideration.

A simple example:
i) In 2000:
number of cars sold = x
Total profit = \$100
=> Average profit "per car sold" = 100/x

ii) In 2009:
Say, number of cars sold = y
Total profit = \$170
=> Average profit "per car sold" = 170/y

So, number of cars sold ("x" and "y" respectively) also matter.
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Re: What was the percentage change in the simple average profit per car [#permalink]
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Re: What was the percentage change in the simple average profit per car [#permalink]
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