Question

when sum would yield an interest of $36 in 3 years at 3% P.A (per anum)

Answer 1

Let principle sum be x
Tme = 3 years
Rate = 3% per annum
SI = $36
SI = $\frac{P*R*T}{100}$
36 = $\frac{x*3*3}{100}$
x = 36*$\frac{100}{9}$
x = 400
So the sum that would yield interest of $36 is $400.

Answer 2

The sum that would yield interest is $400.

Step-by-step explanation:

Let the principle sum =  x

To find, sum would yield = ?

Time (T) = 3 years, Rate(R) = 3% per annum and

Simple Interest(SI) = $36

We know that,

Simple Interest(SI) $=\dfrac{P\times R\times T}{100}$

⇒  $\dfrac{x\times 3\times 3}{100}=36$

⇒ $x=\dfrac{3600}{9} =400$

The principle sum = $400

Amount = $400 + $36 =  $436

Hence, the sum that would yield interest is $400.