### General Strategy for GR8767 #25

Posted:

**Tue Mar 12, 2013 12:06 am**http://www.wmich.edu/mathclub/files/GR8767.pdf

How do I solve number 25?

The question is:

x and y are positive integers such that

Which of the following must also be divisible by 11?

A: 4x + 6y

B: x + y + 5

C: 9x + 4y

D: 4x - 9y

E: x + y - 1

How do I solve number 25?

The question is:

x and y are positive integers such that

Which of the following must also be divisible by 11?

A: 4x + 6y

B: x + y + 5

C: 9x + 4y

D: 4x - 9y

E: x + y - 1