Question

3.
1. Simple interest on 300 for years at 5% per annum
is :
(A) 40
(B) 42
(C) 50
(D). 45
4.​

Answer 1

CORRECT QUESTION :-

Simple interest on Rs. 300 for 3 years at 5% per annum is :

(A) Rs. 40

(B) Rs. 42

(C) Rs. 50

(D) Rs. 45

ANSWER :

Simple interest on Rs. 300 for 3 years at 5% per annum is :

(A) Rs. 40

(B) Rs. 42

(C) Rs. 50

(D) Rs. 45 ✓

• Simple interest on Rs. 300 for 3 years at 5% per annum is Rs. 45.

CALCULATION :

❖ Given :-

• Principal, P = Rs. 300

• Rate of interest, r = 5%

• No. of years, n = 3 years.

❖ To Find :-

• Simple Interest, S.I. = ?

❖ Formula Used :-

$\: \: \: \: \: \: \: \: \: \: \bigstar \: \: \boxed{ \sf{ \large{ \: S.I. = \frac{P \times r \times n}{100} \: }}}$

❖ Calculation of Simple Interest :-

Using the formula we get,

$\: \: \: \: \: \bf{S.I. = \frac{P \times r \times n}{100} } \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \bf{ = \frac{3 \cancel{0} \cancel{0 }\times 5 \times 3}{1 \cancel{0} \cancel{0}} } \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: = \bf{3 \times 5 \times 3} \\ \\ \bf{ = 45}$

Hence, the Simple interest on Rs. 300 for 3 years at 5% per annum is Rs. 45.