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A photographer purchases 30 rolls of black and white film an

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A photographer purchases 30 rolls of black and white film an [#permalink] New post 26 Jul 2018, 10:22
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A photographer purchases 30 rolls of black and white film and 25 rolls of color film. If the cost of each roll of color film is twice the cost of each roll of black and white film, what percent of the total cost of film is the price of a roll of color film?


A. 0.5%

B. 1.25%

C. 2.0%

D. 2.5%

E. 3.0%

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Re: A photographer purchases 30 rolls of black and white film an [#permalink] New post 26 Jul 2018, 19:43
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The Answer is D 2.5 %

Let the cost of B/W be x Dollars , so Cost of Color films = 2x

Total Cost of 30x + 50x = 80x

So Ratio of 1 Color Film to total cost = 2x/80x = 2.5 %
Re: A photographer purchases 30 rolls of black and white film an   [#permalink] 26 Jul 2018, 19:43
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A photographer purchases 30 rolls of black and white film an

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