$A$ sum of money amounts to ₹ $6655$ at the rate of $10 \%$ compounded annually for $3$ years. The sum of money is (in ₹):

The compound interest (in ₹) on ₹ $6250$ at $12 \%$ per annum for $1$ year,compounded half-yearly is

Which of the statements given below are sufficient to answer the following question?
What is the rate of interest per annum on an investment of $Rs. 800$?
$(I)$ The income from $S.I.$ at the end of $3$ years at the same rate of interest is $19$.
$(II)$ $C.I.$ is $15.76$ more than $S.I.$ on the same sum and same rate in $2$ years.

Mr. Dua invested money in two schemes $A$ and $B$ offering compound interest at $8 \%$ per annum and $9 \%$ per annum respectively. If the total amount of interest accrued through two schemes together in two years was ₹ $4818.30$ and the total amount invested was ₹ $27000$. What was the amount (in ₹) invested in scheme $A$?

The compound interest on ₹ $30000$ at $7 \%$ per annum is ₹ $4347$. The period (in years) is

On a certain sum of money,the simple interest for $2$ years is ₹ $200$ at the rate of $7 \%$ per annum. Find the difference between compound interest $(CI)$ and simple interest $(SI)$. (In ₹)