- A sum of money amounts to Rs 1024 in 4 years and Rs 1458 in 7 years at a compound rate of interest. What is the rate of interest per annum?
- Find the compound Interest on Rs. 16,000 @15 % p.a for 2 years 4 month Compounded annually?
- On what sum will the difference between the simple and compound interest for 3 years at 20% percent per annum amounts to Rs 66.56?
- In 3 years, Rs. 6000 amounts to Rs. 7986 at certain rate of compound Interest, compounded annually. Find the rate %?
- Divide Rs. 53,285 into two parts such that the amount received from first part after 12 years is equal to the amount received from second part after 8 year...
- A sum of money amounts to Rs 250 in 4 years and Rs 432 in 7 years at a compound rate of interest. What is the rate of interest per annum?
- A man wants to invest Rs. 60660 in bank accounts of his two sons whose ages are 12 years and 16 years in such a way that they will get equal amount at an a...
- The C.I on a sum of Rs. 6400 becomes Rs. 1276.5625 in 9 months. Find the rate of interest, if the rate of interest is compounded quarterly?
- Divide Rs. 53,285 into two parts such that the amount received from first part after 12 years is equal to the amount received from second part after 8 year...
- At what rate percent per annum will Rs. 75,000 yields a compound interest of Rs. 6,120 in 6 months, if the interest is being compounded quarterly? Calculat...
- A certain sum of money yields Rs. 8,334 as compound interest for 3 years at 15% per annum. Calculate the approximate compound interest on the same amount o...
- In what time will Rs. 25000 amount to Rs. 26530.20 @ 4% compound interest payable half-yearly?
- At what rate percent per annum will Rs. 75,000 yields a compound interest of Rs. 6,120 in 6 months if the interest is being compounded quarterly? Calculate...
- What will be the CI on a sum of Rs.50,000 after 3 years at the rate of 11%p.a? ...
- A person took a loan of Rs 1500 from an investor for at 20% p.a. on compound interest for 2 years. But he paid only 80% of amount after 2 years. And invest...
- What is the compound interest on a sum of Rs 12,000 for 2(5/8) years at 8% p.a., when the interest is compounded annually? (nearest to a rupee)
- 'A' invests Rs.10,000 for 3 years at a certain rate of interest. At the end of the second year, it amounts to Rs.11,664. Calculate the rate of interest per...
- The compound interest on a sum of ₹ 5,500 at 15% p.a. for 2 years, when the interest is compounded 8 monthly, is:
- An article is marked 35% above its cost. If a profit of 20% is earned by selling the article, then the discount per cent offered on the marked price of the...
- What is the difference between the compound interest, when interest is compounded 5-monthly, and the simple interest on a sum of ₹12,000 for 1(1/4) years...
- The compound interest on Rs. 30,000 at 7%per annum for n years is Rs. 4347. The value of n is
- A invest Rs. X at 10% compound interest for 3 years. If difference between the interest of 3rd year and 2nd year is Rs. 1210, find the value of X.
- At what percentage rate, compound interest compounded annually for a sum of 240,000, will amount to ₹44,100 in two years?
- The simple interest on a sum of money will be Rs. 800 after 10 years. If the principal is tripled after 5 years, what will be total interest at the end of ...

Question Listing

- Addition & subtraction
- Age
- Algebra
- Alligation
- Approximation
- Arithmetic Progression
- Average
- Bar graph
- Binomial Equation
- Boats and streams
- Calculation based
- Caselet DI
- Circle
- Clock and Calendar
- Coordinate Geometry
- Cube & cube roots
- Data Sufficiency
- Databased
- Databased Partnership
- Databased Profit Loss and discount
- Databased Ratio
- Databased Time and Work
- DI
- Di Bar Graph
- DI Line Graph
- DI Pie Chart
- DI PIE Chart and Ratio Table
- DI Tables
- Di With Missing Numbers
- Differential Equation
- Discount
- Divisibility rules
- Equality and Inequality
- Equations
- Fractions
- Geometry
- HCF and LCM
- Height and Distance
- Income and Expenditure
- Integration
- Limits and Continuity
- Line graph
- Linear Equation
- Lines and Angles
- Maxima and Minima
- Mensuration
- Missing DI
- Mixture
- No. System
- Partnership
- Percentage
- Permutation and combination
- Pipes and cisterns
- Polygon
- Probability
- Profit and loss
- Quadratic equation
- Quadrilateral
- Quant Miscellaneous
- Quantity Inequality
- Radar graph
- Ratio
- Ratio and proportion
- SI and CI databased
- Simple and compound interest
- Simplification
- Square & square root
- Surds and indices
- Time
- Time and distance
- Time and work
- Trains
- Triangle
- Trigonometry
- Uniatry Method
- Weekly Quiz Quant
- Wrong Series

Compound interest is the interest imposed on a loan or deposit amount. It is the most commonly used concept in our daily existence. The compound interest for an amount depends on both Principal and interest gained over periods. This is the main difference between compound and simple interest.

Suppose we observe our bank statements, we generally notice that some interest is credited to our account every year. This interest varies with each year for the same principal amount. We can see that interest increases for successive years. Hence, we can conclude that the interest charged by the bank is not simple interest; this interest is known as compound interest or CI. Compound interest finds its usage in most of the transactions in the banking and finance sectors and other areas. Some of its applications are:

Increase or decrease in population.

The growth of bacteria.

Rise or Depreciation in the value of an item.

Compound Interest in Maths

In Maths, Compound interest can be calculated in different ways for different situations. We can use the interest formula of compound interest to ease the calculations. To calculate compound interest, we need to know the amount and principal. It is the difference between amount and principal.

Compound Interest Formula

As we have already discussed, the compound interest is the interest-based on the initial principal amount and the interest collected over the period of time. The compound interest formula is given below:

Compound Interest = Amount – Principal

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