Question

On a certain sum the interest paid after 3 years is Rs450 at
5% rate of interest per annum . Find the sum?​

Answer 1

Answer :-

Given -

• Time = 3 years
• Simple Interest = Rs. 450
• Rate = 5%

To find -

• Sum

Solution :-

We know that,

Simple interest = PRT / 100

Substituting the values in formula -

➩ 450 = P × 3 × 5 / 100

➩ 450 = 15P/100

➩ 15P = 450 × 100

➩ 15P = 45000

➩ P = 45000 / 15

➩ P = 3000

Sum = Rs. 3000

Answer 2

Given :-

• Time = 3 years
• Simple Interest = Rs. 450
• Rate = 5%

To find :-

• Sum

Solution :-

★ We know that ★

Simple Interest = $\frac{P × R × T}{100}$

Substituting the value in formula :-

→ 450 = $\frac{P × 3 × 5}{100}$

→ 450 = $\frac{15P}{100}$

→ 15P = 450 × 100

→ 15P = 45000

→ P = $\frac{45000}{15}$

→ P = 3000

Hence,

• Sum is Rs. 3000