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In the year 2001, a company's sales increased by x percent

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Director
Joined: 17 Oct 2005
Posts: 938
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In the year 2001, a company's sales increased by x percent [#permalink]  07 Jan 2006, 23:21
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In the year 2001, a company's sales increased by x percent from the year 2000. In 2002, sales decreases x percent from the year 2001. If the sales in 2002 is 9 percent less than that in 2000, what is x?
Director
Joined: 17 Dec 2005
Posts: 548
Location: Germany
Followers: 1

Kudos [?]: 15 [0], given: 0

[#permalink]  08 Jan 2006, 02:44
x=30

assume sales=100

Increase 2000 - 2001= 100*(1+(x/100))
Decrease 2001-2002= " *(1-(x/100))

2002= 100*0,91

100*(1+(x/100))*(1-(x/100))=100*0.91
Director
Joined: 04 Oct 2005
Posts: 586
Location: Chicago
Followers: 1

Kudos [?]: 5 [0], given: 0

[#permalink]  08 Jan 2006, 23:49
is there a simple way to solve it without those tricky "x" calculations...
[#permalink] 08 Jan 2006, 23:49
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In the year 2001, a company's sales increased by x percent

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