Question

a sum of money becomes 4 times at simple interest in 10 year what is the rate of interest​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

30%

Step-by-step explanation:

Let the principal be x

Now we are given that a sum of money becomes 4 times

Amount = 4x

So, Simple interest = 4x-x = 3x

Time = 10 years

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

$3x =\frac{x \times R \times 10}{100}$

$3x \times \frac{100}{x \times 10}=R$

$30%=R$

Hence the rate of interest​ is 30%