1. The simple interest on a sum of money is Rs. 50. What is the sum?
I. The interest rate is 10% p.a.
II. The sum earned simple interest in 10 years
Choose the most appropriate option.
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 necessary to answer  E) None of these
Explanation:   Given : S.I. = Rs. 50.   I gives, R = 10% p.a.   II gives, T = 10 years.   Sum = (100 x S.I)/(t x r ) = Rs.(100 x 50)/(10 x 10) = Rs.50   ANSWER IS Both I and II are necessary to answer
<result>D</result>
1. The simple interest on a sum of money is Rs. 50. What is the sum?
I. The interest rate is 10% p.a.
II. The sum earned simple interest in 10 years