The compound interest on ₹ 2800 for 18 months at 10% p.a. is · ABC26GN4143
Subject: General Aptitude · Chapter: Compound Interest · Exam: L.I.C.A.D.O. 2008
The compound interest on ₹ 2800 for 18 months at 10\% p.a. is
(a)₹ 420
(b)₹ 434
(c)₹ 436.75
(d)₹ 441.35
Answer
Explanation
$$\begin{aligned} \text { Amount } & =₹\left[2800 \times\left(1+\frac{10}{100}\right)\left(1+\frac{5}{100}\right)\right] \\ & =₹\left(2800 \times \frac{11}{10} \times \frac{21}{20}\right)=₹ 3234 . \\ \therefore \quad \text { C.I. } & =₹(3234-2800)=₹ 434 . \end{aligned}$$
Explanation as extracted from the printed page; notation may be imperfect.
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