Question

the interest paid on a certain sum after 4 years at 7% rate of interest per annum 560 rupees find the sum

Answer 1

Two thousand will be.

Answer 2

Interest = ₹560
Time Period = 4years
Rate = 7%

Now, the only missing thing is the principal which you didn't write in question.

So, we know the Formula of Simple Interest
$= \frac{p \times r \times t}{100}$
Now, we put all the values.
$560 = \frac{p \times 7 \times 4}{100}$

$p = \frac{560 \times 100}{7 \times 4}$
By simplifying, we get principal to be = ₹2000