7. A worker starts working with a monthly salary of $450,000 if the expected increases average 10% per year, what will his salary be when he reaches retirement age in 20 years?

8. Mrs. Hernndez deposited $800 at the end of each month for a year, charging $24 as monthly interest. How much will she have in her account at the end of the year?

9. Assuming an effective rate of return of 4%, find the maturity value of a $2,500 debt contracted with interest at 6% convertible quarterly, payable in 8 years.

10. Obtain the accumulated amount in five years, for a capital of 500.00 new pesos that is invested with an interest rate of 40% compounded bimonthly.

11. If you invest $300 at 6% annual interest payable (a) annually, (b) semi-annually, (c) quarterly (d) daily, how much do you have after 4 years?

12. Obtain the amount that accumulates in two years if a capital of $65,000 is invested at 40% compounded by semesters

13. Calculate the amount and interest obtained by investing $200.- at 5% annual interest for 10 years under a compound capitalization regime.

14. Determine the accumulated amount of $50,000 that is deposited in a securities account that pays 15% per year convertible monthly: a) After one year b) After two years

15. How much money must be paid to a bank that made a loan of $300,000 if principal and interest are repaid annually and the applied rate is 0.24 per year convertible quarterly?