Question

The simple interest on Rs.3000 for 3 yrs is Rs 900 & what is rate of interest ?
a 5% p.a.
b. 60% P.a.

C.7% p. a.
de loto Polo
10​

Answer 1

Given:

• Sum of money is Rs 3000.
• Time is 3 years.
• Simple Interest is Rs 900.

To Find:

• The rate of interest.

Answer:

Here it's given that a sum of money which is Rs 3000 results to given a SI of Rs 900 in 3 years at a certain rate of interest.

So ,we the formula of SI as ;

$\large{\underline{\boxed{\red{\sf{\leadsto SI =\dfrac{Principal\times Rate\times Time}{100}}}}}}$

Using above formula;

$\sf{\implies Rs\:900 = \dfrac{Rs\:30\cancel{00}\times 3\times Rate}{\cancel{100}}}$

$\sf{\implies Rate=\dfrac{Rs\:900}{Rs\:30\times3}}$

$\sf{\implies Rate =\cancel{\dfrac{Rs\:900}{Rs\:90}}}$

${\underline{\boxed{\red{\sf{\leadsto Rate= 10\%}}}}}$

Answer 2

Given:

Sum of money is Rs 3000.

Time is 3 years.

Simple Interest is Rs 900.

To Find:

The rate of interest.

Answer:
Here it's given that a sum of money which is Rs 3000 results to given a SI of Rs 900 in 3 years at a certain rate of interest.
So ,we the formula of SI as ;
\large{\underline{\boxed{\red{\sf{\leadsto SI =\dfrac{Principal\times Rate\times Time}{100}}}}}}​​​⇝SI=​100​​Principal×Rate×Time​​​​​​​
Using above formula;
\sf{\implies Rs\:900 = \dfrac{Rs\:30\cancel{00}\times 3\times Rate}{\cancel{100}}}⟹Rs900=​​100​​​​​Rs30​00​​​×3×Rate​​
\sf{\implies Rate=\dfrac{Rs\:900}{Rs\:30\times3}}⟹Rate=​Rs30×3​​Rs900​​
\sf{\implies Rate =\cancel{\dfrac{Rs\:900}{Rs\:90}}}⟹Rate=​​Rs90​​Rs900​​​​​
{\underline{\boxed{\red{\sf{\leadsto Rate= 10\%}}}}}​​​⇝Rate=10%​​​​​