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# The number of digital camera sold is twice the number of

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Manager
Joined: 08 Apr 2004
Posts: 137
Location: Corea
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The number of digital camera sold is twice the number of [#permalink]  08 Sep 2004, 05:54
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The number of digital camera sold is twice the number of video camera. what is the average price of digital camera and video camera
1. the unit price of digital
2. the unit price of video.
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Joined: 16 Jun 2004
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It is C. We need to know the unit price of both the digital camera as well the Video camera in order to find the avg price.

What we have as data from the question stem is
D = 2V (no of Digital Camera(D) sold = twice the Video Camera (V))

What we are asked to find is

(D*Dp + V*Vp)/(D + V) = ?

we D = 2V, substituting we have (2Dp + Vp)/3 = ?

So,Dp= unit price of Digital camera and Vp= unit price of Video camera are essential.
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