ABC26GN4142 · Compound Interest
Subject: General Aptitude · Chapter: Compound Interest · Exam: 2010 · Marks: · Difficulty:
What would be the compound interest accrued on an amount of ₹ 8400 @ 12.5 p.c.p.a. at the end of 3 years?
(a)₹ 2584.16
(b)₹ 3560.16
(c)₹ 3820.14
(d)₹ 4205.62
(e)None of these
Answer
Explanation
$$\begin{aligned} & \text { Amount }=₹\left[8400 \times\left(1+\frac{25}{2 \times 100}\right)^{3}\right]=₹\left(8400 \times \frac{9}{8} \times \frac{9}{8} \times \frac{9}{8}\right) \\ & =₹\left(\frac{382725}{32}\right)=₹ 11960.156 \approx ₹ 11960.16 . \\ & \therefore \text { C.I. }=₹(11960.16-8400)=₹ 3560.16 . \end{aligned}$$
Explanation as extracted from the printed page; notation may be imperfect.
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