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To reproduce an old photograph, a photographer 3x charges x

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To reproduce an old photograph, a photographer 3x charges x [#permalink] New post 18 Mar 2018, 09:38
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Question Stats:

66% (01:13) correct 33% (02:23) wrong based on 6 sessions
To reproduce an old photograph, a photographer charges x dollars to make a negative, \(\frac{3x}{5}\) dollars for each of the first 10 prints, and \(\frac{x}{5}\) dollars for each print in excess of 10 prints. If $45 is the total charge to make a negative and 20 prints from an old photograph, what is the value of x?

(A) 3
(B) 3.5
(C) 4
(D) 4.5
(E) 5
[Reveal] Spoiler: OA

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Re: To reproduce an old photograph, a photographer 3x charges x [#permalink] New post 20 Mar 2018, 00:54
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x + 10 * (3x/5) + 10 * (x/5) = 45 --> 9x = 45 --> x = 5
Re: To reproduce an old photograph, a photographer 3x charges x   [#permalink] 20 Mar 2018, 00:54
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To reproduce an old photograph, a photographer 3x charges x

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