Dimitri weighs 3x-2x pounds more than Allen weighs. Together, Allen and Dimitri weigh a total of y pounds. Which of the following represents Allen’s weight? Answers
A) y - x/2	B) 2x - y/2	C) (y - x)/2	D) y - 2x	E) 2x - y
These type of multi-variable story problems are usually perfect for TESTing VALUES.   Here, we're told that Dimitri weighs 3X-2X or X pounds more than Allen weighs and that they weight a combined TOTAL of Y pounds.   IF....   Dimitri = 30   Allen = 20   X = 10   Y = 50   We're asked for Allen's weight, so we're looking for an answer that equals 20 when X = 10 and Y = 50.   Answer A:  50 - (10/2)= 
<gadget id="calculator"> 50 - (10/2)</gadget>
<output>45</output>
45 NOT a match   Answer B: 20 - (50/2)= -5 NOT a match   Answer (y - x)/2: (50-10)/2 = 20 This IS a match   Answer D:   50 - 20= 
<gadget id="calculator">  50 - 20</gadget>
<output>30</output>
30 NOT a match   Answer E: 20 - 50= -30 NOT a match   Final Answer:   (y - x)/2
<result>C</result>
Dimitri weighs 3x-2x pounds more than Allen weighs. Together, Allen and Dimitri weigh a total of y pounds. Which of the following represents Allen’s weight?