Question

find the principal if rate of interest 8% and time 19 years and simple interest 190.​

Answer 1

S. I = P×R×T/100

P = S. I ×100/R×T

=190×100/8×19

= 500/4

=125

Principal = 125

Answer 2

Concept

Simple interest is calculated with the following formula

$S.I=\frac{P\times R\times T}{100}$ , where P = Principal, R = Rate of Interest in % per annum, and T = Time, usually calculated as the number of years.

• Principal: Principal is the amount originally borrowed or invested by the bank. The capital is represented by P.
• Interest Rate: Interest rate is the rate  at which the principal  is given to someone for a period of time. The interest rate  is denoted by R.
• Time: Time is the period during which  principal  is given to someone. Time is represented by T.
• Amount: When a person takes out a loan from a bank, he has to repay the amount of principal  plus interest, and this repayment amount is called the amount.

Amount = capital + simple interest

Given

We have given rate of the simple interest which is $18\%$ and time which is 19 years and simple interest which is 190.

Find

We are asked to determine the principal value of simple interest .

Solution

It is given that $R=8\% ,\ T=19years ,S.I=190$ .

$S.I=\frac{P\times R\times T}{100} \\\\190=\frac{P\times8\times19}{100}\\\\19000=152P\\\\P=125$

Therefore, the value of principal amount is Rs 125 .

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