A father was as old as his son's present at the time of your birth. If the father's age is 38 years now, the son's age one years back was?  Options:
A) 10 years
B) 12 years
C) 14 years
D) 16 years
E) 18 years
Let the son's present age be x years. Then, (38 - x) = x   2x = 38.   x = 19.   Son's age 1 years back (19 - 1)= 
<gadget id="calculator">(19 - 1)</gadget>
<output>18</output>
18 years.   18 years
<result>E</result>
A father was as old as his son's present at the time of your birth. If the father's age is 38 years now, the son's age one years back was?