Given
Rate of sales tax on watch =$18%$
Listed price of watch = ₹$15,500$
Sales tax = (list price × rate of sale tax)$/100$
$=\left( 15,500\times 18 \right)//100$
= ₹$2,790$
Selling price of watch = ₹$\left( 15,500+2,790 \right)$
= ₹$18,290$
Given
Rate of sales tax on watch =$18%$
Listed price of watch = ₹$15,500$
Sales tax = (list price × rate of sale tax)$/100$
$=\left( 15,500\times 18 \right)//100$
= ₹$2,790$
Selling price of watch = ₹$\left( 15,500+2,790 \right)$
= ₹$18,290$