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# machine tools

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Intern
Joined: 26 Feb 2011
Posts: 38
Followers: 1

Kudos [?]: 61 [0], given: 1

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12 Mar 2011, 12:13
In year Y imported machine tools accounted for 25 percent of total machine - tool sales in the United States, and Japanese imports accounted for 45 percent of the sales of imported machine tools. If the total sales of machine tools imported Japan that year was x billion dollars, then the total sales of all machine tools in the United States was how many billion dollars?
A/ 9X/80
B/ 13X/20
C/ 80/9X
D/ 20X/13
E/ 80X/9
Math Forum Moderator
Joined: 20 Dec 2010
Posts: 2022
Followers: 154

Kudos [?]: 1441 [0], given: 376

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12 Mar 2011, 12:24
IMT = 0.25T

JI = 0.45 IMT

0.45 IMT = $x b IMT =$x/(0.45) b

T = 4*IMT = 4x/0.45 = 4x*100/45 = 80x/9

Ans: "E"
_________________
Re: machine tools   [#permalink] 12 Mar 2011, 12:24
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