The rate at which a sum becomes four times of itself in 15 years at S.I., will be · ABC26GN4047
Subject: General Aptitude · Chapter: Simple Interest
The rate at which a sum becomes four times of itself in 15 years at S.I., will be
(a)15\%
(b)$17 \frac{1}{2} \%$
(c)20\%
(d)25\%
Answer
Explanation
Let $\mathrm{sum}=₹ x$. Then, S.I. $=₹ 3 x$. $\therefore \quad$ Rate $=\left(\frac{100 \times \text { S.I. }}{P \times T}\right)=\left(\frac{100 \times 3 x}{x \times 15}\right) \%=20 \%$.
Explanation as extracted from the printed page; notation may be imperfect.
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