The overall age of X and Y is 11 year greater than the overall age of Y and Z. Z is how many decades younger that X?
Choose the correct choice from the following answers
A) 11  B) 15  C) 12  D) 17  E) 19
11   11   (X + Y) â€“ (Y + Z) = 11   X â€“ Z = 11
<result>A</result>
The overall age of X and Y is 11 year greater than the overall age of Y and Z. Z is how many decades younger that X?