Discussion :: Simple Interest

What is the rate of simple interest?
I. The total interest earned was Rs. 4000.
II. The sum was invested for 4 years.
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.


E.

Answer : Option A
Explanation :
We know that, R =  
\([\frac { 100*S*I } { P*T } ]\) 
we, I gives, S.I. = Rs. 4000.
II gives, T = 4 years.
But, P is unknown. So, we cannot find R.
So, given data is insufficient to get R.
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