What is the principal sum?
I. The sum amounts to Rs. 720 in 4 years at S.I.
II. The sum amounts to Rs. 810 in 7 years at S.I.
III. The rate of interest is 10% p.a.  Options:	A) I and III only	B) II and III only	C) I and II only	D) Any one of the three	E) Any two of the above
Any two of the abovexplanation:   Clearly, any of the three will give us the answer   Answer: Any two of the above
<result>E</result>
What is the principal sum?
I. The sum amounts to Rs. 720 in 4 years at S.I.
II. The sum amounts to Rs. 810 in 7 years at S.I.
III. The rate of interest is 10% p.a.