What is the principal sum?
I. The sum amounts to Rs. 660 in 3 years at S.I.
II. The sum amounts to Rs. 700 at S.I.
III. The rate of interest is 6% p.a.	Choose the correct choice from the following answers:
A) I and III only	B) II and III only	C) I and II only	D) Any two of the three	E) None of these
Explanation:   Clearly, I and III is needed to solve this question where as II is not needed   I and III onlynswer: I and III only
<result>A</result>
What is the principal sum?
I. The sum amounts to Rs. 660 in 3 years at S.I.
II. The sum amounts to Rs. 700 at S.I.
III. The rate of interest is 6% p.a.