The sales tax on a set of luggage is $17.50. If the luggage cost before tax is $250.00, what is the sales tax rate? _________________________________________

12. A realtor sold a townhouse for $105,000. If he received a commission of $8400, what is his commission rate? ______________________________________________

13. A printer that sells for $229 is on sale for $171.75. What is the discount rate? _________________________________

14. An import/export business marks up imported merchandise by 110%. If a wicker chair imported from Singapore originally costs $94 from the manufacturer, what is the retail price? _________________________________________________________

15. The number of deaths from alcohol-induced causes rose from approximately 20,200 to approximately 20,700 in a 10-year period. (Source: Centers for Disease Control) What is the percent increase? Round to the nearest tenth of a percent. _________________________________________

16. Shanti bought a new water-efficient toilet for her house. Her old toilet used 5 gal of water per flush. The new toilet uses only 2.1 gal of water per flush. What is the percent decrease in water per flush? ____________________________________

12. The realtor's commission rate is 8% (8400/105000 * 100).

13. The discount rate is 25% ((229-171.75)/229 * 100).

14. The retail price is $195.4 (94 * 1.1).

15. The percent increase is 2.5% ((20700-20200)/20200 * 100).

16. The percent decrease in water per flush is 58% ((5-2.1)/5 * 100).