The $C.I.$ on $Rs. 10000$ at $20 \%$ per annum at the end of $1$ year $6$ month, if the interest is calculated half yearly will be

The simple interest accrued on an amount of $Rs. 20000$ at the end of $3$ years is $Rs. 7200$ . What would be the compound interest accrue on the same amount at the same rate in the same period?

The difference between simple and compound interest compounded annually on a certain sum of money for $2$ years at $4 \%$ per annum is $Rs. 1$ The sum (in $Rs.$) is

A certain sum at compound interest amounts in two years to ₹ $2809$ and in three years to ₹ $2977.54 .$ Find the rate of interest and the original sum (In ₹).

A sum put out at $4 \%$ compound interest payable half-yearly amounts to ₹ $6632.55$ in $1 \frac{1}{2}$ years. The sum (In ₹) is

If the amount is $6 \frac{1}{4}$ times the sum after $2$ years at compound interest, the rate of interest (In $\%$) per annum is