ABC26GN3988 · Simple Interest

Subject: General Aptitude · Chapter: Simple Interest · Exam: 2005 · Marks: · Difficulty:

At what rate of simple interest a certain sum will be doubled in 15 years? (R.R.B., 2005)

Answer

Answer (as printed):

Explanation

Let principal $=P$. Then, S.I. $=P$ and $T=15 \mathrm{yrs}$. $$\therefore \quad \text { Rate }=\left(\frac{100 \times P}{P \times 15}\right) \%=6 \frac{2}{3} \% .$$

Explanation as extracted from the printed page; notation may be imperfect.

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