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 Options:
A) 35 years  B) 40 years  C) 50 years  D) 55 years  E) None
Solution   Sum of the present ages of husband, wife and child	= (27x3+3x3) years   = 90 years.   Sum of the present ages of wife and child	= (20x2+5x2) 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