If 2x + y = 6 and x + 2y = 5, then (x + y)/3 =
Choose the correct choice from the following
A) 1	B) 4/3	C) 17/5	D) 11/9	E) 4
We have two equations:   2x + y = 6   x + 2y = 5   Notice that something nice happens when we ADD them. We get:   3x + 3y = 11   11/9ivide both sides by 3 to get:x + y =11/3   So, (x + y)/3 =11/9   Answer: 11/9
<result>D</result>
If 2x + y = 6 and x + 2y = 5, then (x + y)/3 =