A father said to his son, "I was as old as you are at the present at the time of your birth". If the father's age is 50 years now, the son's age 10 years back was: Choose the correct option.
A) 14 years
B) 19 years
C) 33 years
D) 15 years
E) 39years
Let the son's present age be x years. Then, (50 - x) = x   2x = 50   x = 25   Son's age 5 years back (25 - 10)= 
<gadget id="calculator">(25 - 10)</gadget>
<output>15</output>
15 years.   Answer: 15 years
<result>D</result>
A father said to his son, "I was as old as you are at the present at the time of your birth". If the father's age is 50 years now, the son's age 10 years back was: