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If the difference between the simple interest and compound interest on some principle amount at 20%per annum for 3 year is 48 then the principle amount must be?
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If the difference between the simple interest and compound interest on...
Difference between Simple Interest and Compound Interest


To find the principle amount, we need to understand the concept of simple interest and compound interest, as well as the formula to calculate both.

Simple Interest: Simple interest is calculated as a percentage of the principal amount over a certain period of time. The formula for simple interest is:

Simple Interest = (Principal Amount * Rate * Time) / 100

Compound Interest: Compound interest is calculated on both the principal amount and the accumulated interest from previous periods. The formula for compound interest is:

Compound Interest = Principal Amount * (1 + Rate/100)^Time - Principal Amount

Given Information


The given information in the question is as follows:

Rate = 20%
Time = 3 years
Difference between Simple Interest and Compound Interest = 48

Calculating Simple Interest


Using the formula for simple interest, we can calculate the simple interest for 3 years at a rate of 20% per annum:

Simple Interest = (Principal Amount * Rate * Time) / 100

Calculating Compound Interest


Using the formula for compound interest, we can calculate the compound interest for 3 years at a rate of 20% per annum:

Compound Interest = Principal Amount * (1 + Rate/100)^Time - Principal Amount

Finding the Principle Amount


We need to find the principle amount based on the given difference between simple interest and compound interest, which is 48.

To find the principle amount, we can set up an equation:

Simple Interest - Compound Interest = 48

Replacing the formulas for simple interest and compound interest, we get:

(Principal Amount * Rate * Time) / 100 - (Principal Amount * (1 + Rate/100)^Time - Principal Amount) = 48

Simplifying the equation, we get:

(Principal Amount * Rate * Time) / 100 - Principal Amount * (1 + Rate/100)^Time + Principal Amount = 48

Factoring out the common term of Principal Amount, we get:

Principal Amount * [(Rate * Time) / 100 - (1 + Rate/100)^Time + 1] = 48

Now, we can solve this equation to find the principle amount.
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If the difference between the simple interest and compound interest on some principle amount at 20%per annum for 3 year is 48 then the principle amount must be?
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