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Here a good one A manufacturer produce x percent more video

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Here a good one A manufacturer produce x percent more video [#permalink] New post 20 Jan 2007, 16:46
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Here a good one

A manufacturer produce x percent more video cameras in 1994 than in 1993 and y percent more video cameras in 1995 than in 1994. If the manufacturer produced 1,000 video cameras in 1993, how many video cameras did the manufacturer produce in 1995?

1) xy = 20

2) x + y + xy/100 = 9.2

Dan
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Re: GMAT PREP DS [#permalink] New post 20 Jan 2007, 19:15
dragonball20cal wrote:
Here a good one

A manufacturer produce x percent more video cameras in 1994 than in 1993 and y percent more video cameras in 1995 than in 1994. If the manufacturer produced 1,000 video cameras in 1993, how many video cameras did the manufacturer produce in 1995?

1) xy = 20

2) x + y + xy/100 = 9.2

Dan


In 1995 the manufacturer produced 1000*(1 + x/100)*(1+ y/100) cameras, or 1000*(1 + x/100 + y/100 +xy/100^2).

(1) Not enough info. We need x, y, and xy. Insuff => B, C, or E.

(2) x + y + xy/100 = (x/100 + y/100 + xy/100^2)*100. With this info we could indeed solve the problem => B.
Re: GMAT PREP DS   [#permalink] 20 Jan 2007, 19:15
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Here a good one A manufacturer produce x percent more video

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