What is Sonia’s present age?
I.	Sonia’s present age is five times Deepak’s present age.
II.	Five years ago her age was twenty-five times Deepak’s age at that time.	Choose the correct answer:
A) I alone sufficient while II alone not sufficient to answer
B) II alone sufficient while I alone not sufficient to answer
C) Either I or II alone sufficient to answer
D) Both I and II are not sufficient to answer
E) Both I and II are necessary to answer
EXPLANATION   I. S = 5D D = s/5….(i)   II. S – 5 = 25 (D – 5) &lt;=&gt; S = 25D – 120 ….(ii)   Using (i) in (ii), we get S =(25 x S/5) - 120   4S = 120.   S = 30.   Thus, I and II both together give the answer. answer is (Both I and II are necessary to answer).
<result>E</result>
What is Sonia’s present age?
I.	Sonia’s present age is five times Deepak’s present age.
II.	Five years ago her age was twenty-five times Deepak’s age at that time.