Which of the statement given below are sufficient to answer the following question.
What is the rate of interest $p.c.p.a.$ on the amount of $Rs. 15000$ taking loan?
($I$) The difference between $C.I. \& S.I.$ is $Rs. 170$
($II$) The $S.I.$ of $2$ years is $Rs. 2500$
only $I$
only $II$
Either $I$ or $II$
Neither $I$ or $II$
A sum of money at compound interest doubles itself in $15$ years. It will become eight times of itself in (In $years$)
A sum of money at compound interest amounts in two years to Rs. $2809,$ and in three years to $Rs. 2977.54 .$ Find the rate of interest and the original sum.
A sum of money lent at compound interest for $2 \,yr$ at $20 \%$ pa would fetch $Rs. 964$ more, if the interest was payable half-yearly than if it was payable annually. What is the sum (In $Rs.$) ?
If the difference between $S.I.$ and $C.I.$ for $2$ years on a sum of money lent at $5 \%$ is $ 6,$ then the sum is (In ₹)
The simple interest accrued on an amount of $Rs. 19800$ at the end of $3$ years is $Rs. 7128$. What would be the compound interest (In $Rs.$) accrued on the same amount at the same rate in the same period?