Raja was born 4 years after his father's marriage. His mother is 4 years younger than his father but 20 years older than Raja who is 20 years old. At what age did the father get married ?	Choose the correct choice from the following answers
A) 30 years  B) 25 years  C) 20 years  D) 22 years  E) 21 years
Explanation:   Raja's present age = 20 years.   His mother's present age = (20 + 20)= 
<gadget id="calculator">(20 + 20)</gadget>
<output>40</output>
40 years.   His father's present age= (40 + 4)= 
<gadget id="calculator">(40 + 4)</gadget>
<output>44</output>
44 years.   His father's age at the time of Raja's birth= (44 - 20)= 
<gadget id="calculator">(44 - 20)</gadget>
<output>24</output>
24 years.   Therefore Raja's father's age at the time of marriage= (24 - 4)= 
<gadget id="calculator">(24 - 4)</gadget>
<output>20</output>
20 years.   Answer: 20 years
<result>C</result>
Raja was born 4 years after his father's marriage. His mother is 4 years younger than his father but 20 years older than Raja who is 20 years old. At what age did the father get married ?