The average age of husband, wife and their child 3 years ago was 21 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is  Choose one
A) 22 years	B) 40 years	C) 50 years	D) 55 years	E) None
Solution   Sum of the present ages of husband, wife and child	= (21x3+3x3) years   = 72 years.   Sum of the present ages of wife and child	= (20x2+5x2) years   = 50 years.   âˆ´ Husband's present age	= (72 - 50)= 
<gadget id="calculator">(72 - 50)</gadget>
<output>22</output>
22 years.   22 yearsnswer 22 years
<result>A</result>
The average age of husband, wife and their child 3 years ago was 21 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is