# One Rupee Interest means How much Percentage?

By BYJU'S Exam Prep

Updated on: September 20th, 2023

**One Rupee Interest means 12%**. On the principal sum, interest is computed at the rate of one rupee per month. An individual who borrows Rs 100 at an interest rate of Rs 1 will, for example, be required to pay Rs 1 in interest each month. He must therefore pay 12 rupees every year. In mathematics, a value or ratio that can be expressed as a fraction of 100 is known as a percentage.

Table of content

## One Rupee Interest in Percentage

If we need to calculate a percentage of a number, we should divide it by its entirety and then multiply it by 100. The proportion, therefore, refers to a component per hundred. Per 100 is what the word percent means.

By dividing the value by the total value and multiplying the result by 100, the percentage can be calculated. **The percentage is calculated using the formula (value/total value)x100%**. A percentage in mathematics is a number or ratio that is expressed as a fraction of 100. The percent sign, “%,” is frequently used to indicate it.

## How can the percentage of a number be calculated?

- We must use a different formula,
, to determine the percentage of a number.**such as P% of Number = X, where X represents the required percentage** - If we don’t use the percent sign, we must write the equation above as P/100 x Number = X.
- Hence, Re 1 interest Rs 100 indicates that the interest rate is 12%.

### Simple Interest in Mathematics

The simplest way to calculate interest is as a percentage of the principal. Simple interest is calculated by multiplying the principal by the time, interest rate, and time period. “**Simple Interest = Principal x Interest Rate x Time**” is the written formula. The simplest method for calculating interest is using this equation.

**Summary**:

## One Rupee Interest means How much Percentage?

* 12% interest is equal to one rupee. Interest is calculated at a monthly rate of one rupee on the principal amount.* For instance, if someone borrows Rs 100 at a Rs 1 interest rate, they will need to pay Rs 1 in interest each month. Therefore, he is required to pay 12 rupees annually. A percentage in mathematics is a number or ratio that can be expressed as a fraction of 100.

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