Question

on a certain principal if the simple interest for 2 years is Rs 6000 and compound interest for the 2 years is Rs 6900. find the principal ​

Answer 1

Answer:

the required principal= Rs. 10,000

Step-by-step explanation:

step by step explanation is given in the attachment above

Answer 2

Answer:

Rs.10000

Step-by-step explanation:

Let the principal be x

Simple interest = 6000

Time = 2 years

$SI = \frac{P \times R \times T}{100}$

$6000 = \frac{x \times R \times 2}{100}$

$\frac{6000 \times 100}{2 \times x} =R$ ---1

Compound interest = 6900

Amount = principal +Interest = x+6900

$A = P(1+\frac{R}{100})^t$

Substitute value from 1

$x+6900 = x(1+\frac{\frac{6000 \times 100}{2 \times x} }{100})^2$

$x=10000$

Hnece the principal is Rs.10000