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A manufacturer produced x percent more video cameras in 1994

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Director
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A manufacturer produced x percent more video cameras in 1994 [#permalink] New post 12 May 2006, 04:13
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A
B
C
D
E

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A manufacturer produced 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 produced in 1995?

1) xy=0
2) x+y+xy/100 = 9.2

Please explain your solution.
Manager
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 [#permalink] New post 12 May 2006, 04:30
should be B

A insufficient as say x can be 10 and y can be 0 or x can 0 and y can be 10 .. any one of them is zero and other is any positive value .. so data insufficient .


B
1993 --- 1000
1994 1000+ ((1000 *x)/100) = 1000 + 10x

1995 1000 + 10x + ((1000 + 10x) * y)/100)
= 1000 + 10x +10y + (xy/10)
= 1000 + 10 * (x +y+(xy/100))
=1000 + 10 * 9.2
=1000 +92
=1092

so b is sufficient
Director
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 [#permalink] New post 12 May 2006, 11:18
Cameras manufactured in 1993 = 1000
Cameras in 1994 = 1000 + 10x
Cameras in 1995 = (1000 + 10x) + (1000y + 10xy)/100 = (100000 + 1000x + 1000y + 10xy)/100 = 1000 + 10(x + y + xy/100)

1) xy = 0
Not sufficient

2) Sufficient.

Hence B
VP
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 [#permalink] New post 12 May 2006, 12:45
Agreed its B.. This was discussed earlier.

These days we are getting lots of repeat questions!
Director
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 [#permalink] New post 13 May 2006, 00:11
OA is B. Neat explanations ipc302 and gmatmba.
  [#permalink] 13 May 2006, 00:11
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