The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 9 years ago was 20 years. The present age of the husband is:  Choose one.
A) 20 years  B) 30 years  C) 60 years  D) 32 years  E) 35 years
D   32 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 + 9 x 2) years = 58 years.   Husband's present age = (90 - 58)= 
<gadget id="calculator">(90 - 58)</gadget>
<output>32</output>
32 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 9 years ago was 20 years. The present age of the husband is: