Question

At what rate of interest will simple interest be half the principal in 5 years.

Answer 1

Let,

Principle = P
Rate of interest = R
Time period = T
Simple Interest = I

Now, As we know

$i = \frac{p \times r \times t}{100}$

Now, As given that Simple interest should be half of principle, Therefore

I = P/2

Therefore,

$\frac{p}{2} = \frac{p \times r \times t}{100}$

As "P" cancels from both the side and the value of "T" is 5 years

$\frac{1}{2} = \frac{r \times t}{100}$

$\frac{100}{2} = r \times 5$

$\frac{100}{2 \times 5} = r$

$\frac{100}{10} = r$

$r = 10\%$

Answer:- Rate of interest will be 10%

Answer 2

Answer:

Step-by-step explanation:

Hope it helps u