The average age of X,Y & Z were 5 years ago was 25 years and the age of X and Y were 6 years ago was 18 years. The present age of the Z is?
Choose one.
A) 52 Years  B) 55 Years  C) 42 Years  D) 38 Years  E) 22 Years
Sum of the present ages of X,Y &amp; Z = (25*3+5*3)= 
<gadget id="calculator">(25*3+5*3)</gadget>
<output>90</output>
90 years.   Sum of the present ages of X,Y= (18*2+6*2)= 
<gadget id="calculator">(18*2+6*2)</gadget>
<output>48</output>
48 years   Present age Z= (90- 48)= 
<gadget id="calculator">(90- 48)</gadget>
<output>42</output>
42 years.   Answer : 42 Years
<result>C</result>
The average age of X,Y & Z were 5 years ago was 25 years and the age of X and Y were 6 years ago was 18 years. The present age of the Z is?