3. The average age of a husband and his wife was 23 years at the time of their marriage.After five years they have a one year old child.The average age of the family now is
A. 19 years B. 23 years
C. 28.5 years D. 29.3 years
Answer:
Sum of the present ages on husband, wife and child =(23x2+5x2)+1
= 57 years
Required average
= (57/3)
