1. A hitch and trailer listed at $ 2149.00 has a net price of $ 1360.00. What is the rate of discount? Give your answer in percentage rounded to the nearest 100th.

2. Rina Boutique advertises a discount of $ 54.72 on sandals. If the discount is 33.5 %, for how much were the sandals sold? Round to the nearest 100th.

3. A 14% discount on a dryer that Gell-Mann purchased, amounted to $ 70.00. Calculate the net price. Round to the nearest 100th. 

4. A microscope is listed for $ 477.00 less 19 2/3 %, 9%, 7.7 %. What is the equivalent single rate of discount that was allowed? Give your answer in percentage to the nearest 100th.

5. Lamb Goldsmith sells watches for $ 840.00 less 12.55 %. Its competitors across the street offer the same type of watch for $ 860.00 less 13.25 %, 11.5%. What additional rate of discount (percentage) must Lamb offer to meet the competitor's price? Round to the nearest 100th. 

6. An invoice for $ 6200.00, dated May 28, 3/10, 1/20, 1/60, was received on May 30. What payment must be made on June 5 to reduce the debt to S 4760.00? Approximate to the nearest 100th. 

7. What amount will reduce the amount due on an invoice of $ 9410.25 by $ 842.00 if the terms of the invoice are 5/10, n/30 and the payment was made during the discount period? Approximate to the nearest 100th.