Sunil bought something that was priced at Rs 10, and the total bill was Rs 11. then what was the sales tax percentage?

To find the sales tax percentage, we first need to find the amount of sales tax that was added to the original price.

Sales tax = Total bill - Original price

In this case, the original price was 10 Rupees, and the total bill was 11 Rupees, so:

Sales tax = 11 - 10

Sales tax = 1

$\mathrm{Sales} \mathrm{tax}\%=\frac{\mathrm{Sales} \mathrm{tax}}{\mathrm{Original} \mathrm{price}}\times 100\%$

$\mathrm{Sales} \mathrm{tax}\%=\frac{1}{10}\times 100\%=10\%$

Therefore, the sales tax percentage is 10%.