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If j and k are integers, and 2j + k = 15, which of the following must be true?

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Source: — Data Sufficiency |

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Re: If j and k are integers, and 2j + k = 15, which of the following must be true?

by Brent@GMATPrepNow » Fri Jul 24, 2020 8:44 am

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BTGModeratorVI wrote: ↑
Thu Jul 23, 2020 6:45 am
 [spoiler]If j and k are integers, and 2j + k = 15, which of the following must be true?[/spoiler]

A. j + k is odd.
B. j + k is even.
C. j is odd.
D. k is odd.
E. k > j

Answer: D
Source: Kaplan
15 is ODD
2j is EVEN for all integer values of j

So, 2j + k = 15 becomes: (some EVEN number) + k = ODD
So, it must be the case that k is ODD

Answer: D

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
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