Question

A sum becomes Rs. 34400 in 6 years on simple interest at the rate of 12 percent per annum. What is the total interest for the 6 years?

• A. Rs. 16800
• B. Rs. 17200
• C. Rs. 14400
• D. Rs. 15400

Answer 1

Answer:

C. Rs. 14400

Solution:

Given:

Total Amount = Rs 34400

Time = 6 years

R = 12%

Formula Used:

1. $SI =\frac{PRT}{100}$

2. SI = Total Amount - P

Where, P = Principal, R = Rate, T = Time(in years)

Calculation:

According to the question,

$34400 = P +\frac{P\times{12}\times{6}}{100}$

$34400=P(1+\frac{72}{100})$

$34400=\frac{172P}{100}$

$P=Rs.20000$

SI = 34400 - 20000 = Rs 14400

∴ The total interest for the 6 years is Rs 14400.