The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 10 years ago was 20 years. The present age of the husband is: Choose the correct choice from the following answers.
A) 20 years B) 34 years C) 60 years D) 30 years E) 35 years
D   30 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 + 10 x 2) years = 60 years.   Husband's present age = (90 - 60)= 
<gadget id="calculator">(90 - 60)</gadget>
<output>30</output>
30 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 10 years ago was 20 years. The present age of the husband is: