Question

lohit invested a sum of money fir 20 yrs at x rate if interesr per annum at simpleinterest and ontained double the sun after 20 yrs the value of x​​

Answer 1

Answer:

lohit invested a sum of money fir 20 yrs at x rate if interesr per annum at simpleinterest and ontained double the sun after 20 yrs the value of x

Answer 2

The value of $x$ is 5%per annum.

Given:

A sum of money 20 yrs at x rate if interest per annum at simple interest.

Obtained double the sun after 20 yrs.

To Find:

The value of x​​.

Step-by-step explanation:

$SI=\frac{MSR}{100}$                   ------------------ formula no 01.

Where SI = simple interest

M = principal

R = interest rate (in percentage)

S= time duration (in years)

mount (A) = Principal (M) + Interest (SI)  ------- formula no.02.

Solution:

As given,a sum of money 20 yrs at x rate if interest per annum at simple interest.

R= x % per annum,       S=2 years    

Let Sum (Principal) amount=M        

Applying the formula no.01.

$SI=\frac{M\times 20\times x}{100}$

$SI=\frac{M\times x}{5}$  

As given,Obtained double the sum after 20 yrs.

Amount(A)= 2M

Applying formula no.02.

$2M=M+\frac{M\times x}{5}$

$M=\frac{M\times x}{5}$

$5M=M\times x$

$x=5 \%$ per annum.

Thus, the value of $x$ is 5%per annum.

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