Question

At what rate per cent per annum will Rs.630 produce an interest of Rs.126 in 4 years

Answer 1

hiiiii friend
here is your answer
$si = \frac{r \times t \times p}{100}$
so,
$126 = \frac{r \times 4 \times 630}{100} \\ \frac{126 \times 100}{630 \times 4} = r \\ r = \frac{2 \times 10}{4} \\r = 5\%$


so, the rate must be 5%

glad to help you
hope it helps
thank you.

Answer 2

hiiiiiii friends.........
here is your answer.........
s=r×t×p/100
126×100/4×630
20/4=5%
hope it help you