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GMAT PAPER TEST PS

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by smclean23 » Mon Dec 29, 2008 6:34 pm
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 from Japan that year was x billion dollars, then the total sales of all machine tools in the United States was how many billion dollars?

9X/80

13X/20

80/9X

20X/13

80X/9

OA is E
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Re: GMAT PAPER TEST PS

by Brent@GMATPrepNow » Mon Dec 29, 2008 7:23 pm
smclean23 wrote: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 from Japan that year was x billion dollars, then the total sales of all machine tools in the United States was how many billion dollars?

9X/80

13X/20

80/9X

20X/13

80X/9

OA is E
This tells us that 45% of 25% of the total machine tools sales are from Japan.
If x is Japan's sales, then we get: (45/100)(25/100)(Total sales) = x

Solve for "Total sales" to get Total = 80x/9
Brent Hanneson - Creator of GMATPrepNow.com
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