This question requires calculating the compound interest (CI) on a given principal amount over a specific period and rate.
The formula to calculate the total amount (A) after compound interest is applied is:
$ A = P \left( 1 + \frac{R}{100} \right)^T $
Substitute the given values:
$ A = 7500 \left( 1 + \frac{4}{100} \right)^2 $
$ A = 7500 \left( 1 + 0.04 \right)^2 $
$ A = 7500 \left( 1.04 \right)^2 $
$ A = 7500 \times 1.0816 $
$ A = 8112 $
The compound interest (CI) is the difference between the final amount (A) and the principal (P):
$ CI = A - P $
$ CI = 8112 - 7500 $
$ CI = 612 $
The compound interest is ₹612.
Find the interest (in ₹) on ₹8,000 at 10% per annum compounded half yearly for $1\frac{1}{2}$ years.
The difference between the compound interest and the simple interest on a principal sum of $₹24,000$ in $2$ years at same rate of interest is $₹60$. The rate of interest is:
Amit had invested same amount of sums at simple as well as compound interest, compounded annually. The time period of investment for both the sums was 2 years and rate of interest too was the same, 4% per annum. At the end, he found a difference of ₹43 in both the interests received. What were the sums (in ₹) invested?
When the difference between compound interest, compounded annually, and simple interest for three years is ₹186 at 10% interest per annum, the principal is ₹______.