6. Calculate the discount rate that was applied to a document whose face value is $175,000, if it was discounted 90 days before its expiration and the discount was $18,000

7. What is the price of 5 printers that are paid with a 30% down payment and two installments of $7,000 and $9,000, respectively, 3 and 3 months after the purchase? Assume annual interest of 20% compounded fortnightly.

8. How much is redeemed per car that cost &180,000, depreciates $8,000 artually over 6 years and increases in value with inflation of 13% per year?

9. How much is the annual depreciation of a computer that cost $18,500, it is estimated that it will serve 2,750 hours each year, for four hours, and in the end $2,000 is recovered?

10. What is the book value at the end of the sixth year, of an asset that depreciates $144,000 in its 8 years of useful life, cost $200,000 and its value increases with inflation of 14.4% per year? What is its value? rescue?