The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is  Select the correct option:
A) 10 years
B) 40 years
C) 30 years
D) 50 years
E) 20 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 + 5 x 2) years = 50 years.   Husband's present age = (90 - 50)= 
<gadget id="calculator">(90 - 50)</gadget>
<output>40</output>
40 years.   Answer: 40 years
<result>B</result>
The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is