The rate of sales tax is 5%.
Work Step by Step
tax=rate*price $99=(r)(1980)$ $99\div1980=1980r\div1980$ $0.05=r$
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.