The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 6 years ago was 20 years. The present age of the husband is:
Choices:
A) 20 years
B) 30 years
C) 60 years
D) 38 years
E) 35 years
D   38 years   Sum of the present ages of husband, wife and child = (27 x 3 + 3 x 3) years = 90 years.   Sum of the present ages of wife and child = (20 x 2 + 6 x 2) years = 52 years.   Husband's present age = (90 - 52)= 
<gadget id="calculator">(90 - 52)</gadget>
<output>38</output>
38 years.
<result>D</result>
The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 6 years ago was 20 years. The present age of the husband is: