Rational Numbers

4 Topics | 3 Quizzes
Linear Equations in One Variable

6 Topics | 3 Quizzes
Understanding Quadrilaterals

5 Topics | 3 Quizzes
Visualising Solid Shapes

3 Topics | 1 Quiz
Data Handling

5 Topics | 3 Quizzes
Squares and Square Roots

4 Topics | 3 Quizzes
Cubes and Cube Roots

3 Topics | 3 Quizzes
Comparing Quantities

6 Topics | 2 Quizzes
Algebraic Expressions and Identities

10 Topics | 3 Quizzes
Mensuration

8 Topics | 3 Quizzes
Exponents and Powers

4 Topics | 3 Quizzes
Direct and Inverse Proportions

3 Topics | 3 Quizzes
Factorisation

4 Topics | 3 Quizzes
Playing with Numbers

3 Topics | 3 Quizzes
As the above method is very long and it cannot be used at every place so we can use the formula to find the compound interest.

Total Amount

**Compound Interest (CI) = Amount (A) – Principal (P)**

**Example**

If a person borrow Rs 15,000 for 3 years at an interest rate of 10% compounded annually. Then what will be Compound Interest and the amount to be paid by him?

**Solution:**

Given,

P = 15000

r = 10%

n = 3

= Rs 19965

CI = A – P

= 19965 – 15000

= Rs. 4965

In the case of half yearly, the time period will get double and the rate of interest will get half.

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