If the sales tax be reduced from $3 \frac{1}{2} \%$ to $3 \frac{1}{3} \%$, then what difference does it make to a person who purchases an article with marked price of ₹8400?
Answer
Answer (as printed):
Explanation
Required difference $=\left(3 \frac{1}{2} \% \text { of } ₹ 8400\right)-\left(3 \frac{1}{3} \% \text { of } ₹ 8400\right)$ $$=\left(\frac{7}{2}-\frac{10}{3}\right) \% \text { of } ₹ 8400=\frac{1}{6} \% \text { of } ₹ 8400=₹\left(\frac{1}{6} \times \frac{1}{100} \times 8400\right)=₹ 14 .$$
Explanation as extracted from the printed page; notation may be imperfect.