Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

Compound Interest

Question:

At what rate of compound interest per annum will a sum of ₹1200 become ₹1348.32 in 2 years?

Options:

6%

6.5%

7%

7.5%

Correct Answer:

6%

Explanation:

$Amount = Principal [1 + (rate per annum/100)]^2$

$1348.32 = 1200 [1 + (r/100)]^2$

$1348.32/1200 = [1 + (r/100)]^2$

$1.1236 = [1 + (r/100)]^2$

(r/100) = sqrt(1.1236) - 1 = 1.06-1

$r/100 = 0.06$

r = 6

The correct answer is Option (1) → 6%