Question

Find the simple interest when principal is Rs 700 rate is 5 % per annum and time is 3 years.

(a) Rs 102
(b) Rs 105
(c) Rs 104
(d) Rs 103​

Answer 1

Given :

• Principal (P) = Rs 700
• Rate (R) = 5%
• Time (T) = 3 yrs

❍ We need to find the simple interest.

_________

Formulae used -

$\large{\boxed{\sf{\orange{S.I = \dfrac{P\times R \times T}{100}}}}}$

• Substitute the values and simplify.

:$\implies{\sf{ \dfrac{700\times 5\times 3}{100}}}$

:$\implies{\sf{ \dfrac{ 7 \cancel{00}\times 5\times3 }{1 \cancel{00}}}}$

:$\implies{\sf{ 7 \times 5 \times 3 }}$

:$\large\implies{\boxed{\sf{\red{ 105}}}}$

Therefore, the simple interest is Rs 105(option.b) .

And we are done! :D

__________________________

Answer 2

Answer:

• Option (b) is correct.

Given:

• Principal (P) = Rs 700
• Rate (R) = 5%
• Time (T) = 3 yrs

To Find:

• Simple interest

Solution:

Here we used formula of simple interest;

• S.I = P × R × T / 100

Substitute the values;

→ 700 × 5 × 3 / 100

→ 7 × 5 × 3

→ 105

Hence,

• Simple interest :- 105