Rapid Revision for CSIR NET Part A: Formula Sheets on Simple Interest - Check Here!

By Renuka Miglani|Updated : April 1st, 2023

CSIR NET Part-A Formula Sheet: During the preparation, the candidates study different formulas to solve problems, but at the last moment, these formulas might not be remembered by the candidates due to exam fear or pressure. We at BYJU'S Exam Prep do not want our students to lag anywhere during the preparation, so we have come up with a concept of a Formula Sheet that will help them revise the important formulas at the last moment. This formula sheet will be a short revision tool and contain only important formulas that need to be studied at the last minute to boost the score. Our experienced subject-matter experts have meticulously designed this CSIR NET General Aptitude Formula Sheet to provide you with the best authentic material. 

In this article, we will cover the CSIR NET General Aptitude Most Important Formulas of SIMPLE INTEREST. Aspiring candidates can check all the most important formulas of Simple Interest for the last minute revision. Scroll down the full article to find out!


Most Important Formulas of Simple Interest

Simple interest is a method that is used to calculate the amount of interest charged on an amount at a given rate and for a given period of time. In simple interest, the principal amount is always the same.

Simple interest is calculated with the following formula: S.I. = P × R × T, where P = Principal, R = Rate of Interest in % per annum, and T = Time, which is generally calculated as the number of years.


The money you deposit or which is in pure form without any interest or deduction on it is called the PRINCIPAL.


The extra money you get from the organization/bank/person after depositing is called the INTEREST.


The total money means the PRINCIPAL and INTEREST you get after a fixed time is called the AMOUNT.

Rate (R):

Rate is the rate of interest at which the principal amount is given to someone for a certain time, the rate of interest can be 5%, 10%, or 13%, etc. The rate of interest is denoted by R.

Time (T):

Time is the duration for which the principal amount is given to someone. Time is denoted by T.

Most Common Formulas



Download PDF for Formula Sheets: Simple Interest


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