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piyush_nitt
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x+10(1.1x)=132,000
x+11x=132,000
12x-132,000
x=11,000
So, D I Guess.
11 voting districts
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Source: Beat The GMAT — Problem Solving |
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gaggleofgirls
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I agree with D.
10 of the districts will each be 10% greater than the 11th district (to get the max spread)
so x + 10(1.1x) = 132,000
x = 11,000
When you do that math backwards, this works also.
If one district has 11,000, then the other 10 districts have 132,000 - 11,000 = 121,000
121,000 / 10 remaining districts = 12,100 per district
12,100 - 11,000 = 1,100, which is 10% of 11,000 for 12,100 is 10% greater than 11,000.
-Carrie
10 of the districts will each be 10% greater than the 11th district (to get the max spread)
so x + 10(1.1x) = 132,000
x = 11,000
When you do that math backwards, this works also.
If one district has 11,000, then the other 10 districts have 132,000 - 11,000 = 121,000
121,000 / 10 remaining districts = 12,100 per district
12,100 - 11,000 = 1,100, which is 10% of 11,000 for 12,100 is 10% greater than 11,000.
-Carrie
