The sum of the present ages of a son and his father is 60 years. Six years ago, father's age was five times the age of the son. After 6 years, what will be son's age?  Choose the correct choice from the following answers:
A) 100 B) 40 C) 80 D) 20 E) 10
Let the present age of the son =x   Then, present age of the father =(60−x)   Six years ago father's age was 5 times the age of the son   (60-X)-6=5(X-6)   84=6X   X=84/6= 
<gadget id="calculator">84/6</gadget>
<output>14</output>
14   Son's age after 6 years=X+6=14+6= 
<gadget id="calculator">14+6</gadget>
<output>20</output>
20   answer is 20.
<result>D</result>
The sum of the present ages of a son and his father is 60 years. Six years ago, father's age was five times the age of the son. After 6 years, what will be son's age?