The difference between the compound interest and the simple interest accrued on an amount of ₹ $18000$ in $2$ years was ₹ $405 .$ What was the rate of interest per cent per annum?
$12$
$13$
$14$
$15$
If a sum of money compounded annually becomes $1.44$ times of itself in $2$ years, then the rate of interest per annum (In $\%$) is
An amount of ₹ $8000$ was deposited at simple interest for $3$ years at $7.5$ $\%$ per annum. How much more would have gained (In ₹) had it been deposited at the same rate per cent compound interest?
The compound interest on a certain sum for $2$ years at $12 \%$ per annum, compounded annually is $Rs. 1272$. The simple interest (In $Rs.$) for that sum at the same rate and for the same period will be?
A certain sum of money at compound interest grows up to ₹ $12960$ in $2$ years and up to ₹ $13176$ in $3$ years. Find the rate per cent per annum.
What will be the difference between simple and compound interest (In ₹) @ $10 \%$ per annum on a sum of ₹ $1000$ after $4$ years?