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28 Apr 2007, 18:07
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
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Could anyone please explain how to solve this ?
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This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Problem Solving (PS) Forum
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28 Apr 2007, 20:44
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The easy and right way: Since you have 11 districts if the smallest one has to be within 10% of the largest. The lowest number will have all 10 other districts with the same size.
(132,000 - X) / 10 = 1.1X
132,000 - X = 11X
132,000 = 12X
X = 11,000
Remember if you can't do the right math, it is multiple guess so at least narrow it down.
Pick the middle one as the first test since you can narrow it down from there.
132,000 - 10,900 = 121,100
121,100 / 10 = 12100
10900 x 1.1 = 11990
Since that was to small go to the next one up. 11,000
132,000 - 11,000 = 121,000
121,000 / 10 = 12000
11000 x 1.1 = 12000
Since 12,000=12,000 the answer is D, 11,000
(132,000 - X) / 10 = 1.1X
132,000 - X = 11X
132,000 = 12X
X = 11,000
Remember if you can't do the right math, it is multiple guess so at least narrow it down.
Pick the middle one as the first test since you can narrow it down from there.
132,000 - 10,900 = 121,100
121,100 / 10 = 12100
10900 x 1.1 = 11990
Since that was to small go to the next one up. 11,000
132,000 - 11,000 = 121,000
121,000 / 10 = 12000
11000 x 1.1 = 12000
Since 12,000=12,000 the answer is D, 11,000
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Problem Solving (PS) Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
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