If an electricity bill is paid before due date, one gets a reduction of 4\% on the amount of the bill. By paying the bill before due date a person got a reduction of ₹ 13. The amount of his electricity bill was
(a)₹ 125
(b)₹ 225
(c)₹ 325
(d)₹ 425
Answer
Answer (as printed): C
Explanation
Let the amount of the bill be ₹ $x$. Then, $4 \%$ of $x=13 \Rightarrow \frac{4}{100} x=13 \Rightarrow x=\frac{13 \times 100}{4}=325$.
Explanation as extracted from the printed page; notation may be imperfect.