My confusion with this question comes from the explanation given (

Kaplan Math Workbook).

They state that we can set up the problem as follows:

x + (x+1) + (x+2) = 312 = 3x + 3

therefore, the next three integers would be:

(x+3) + (x+4) + (x+5) = 3x + 12.

12 is 9 greater than 3 from the previous equation so:

3x + 12 = 312 + 9, or 321.

However, what dictates that the consecutive integers have to be single digit increments. Doesn't consecutive integers also include 2,4,6 and 3,6,9? That would change the whole answer. What am I missing?

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Posted from [url= ToolKit[/color][/url] Posted from GMAT ToolKitWhen we see "consecutive integers" it ALWAYS means integers that follow each other in order with common difference of 1:

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-7, -6, -5 are consecutive integers.

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