Question 1 Lucy has 800 pesos savings with the rate of interest of 25%, determine the ordinary simple interest for 6 months and 13 days. Question 2 A start-up company sets aside 1,100,000 now into an exigency fund, how much will have the company have in 2 years, if it does not use any of the money and the account grows at a rate of 15% per year? Question 3 Lita made a loan of 1500 pesos at 9% simple interest for 5 years. At the end of this period, without the interest being paid the loan was extended for 3 years, but the new interest rate was made 20% compounded quarterly. How much should the borrower pay at the end of 8 years? Question 4 Mr Cruz accumulated 4,000 shares of company stock, in the manufacturing company where have worked for 20 years. One year ago, each of stock was worth 50 pesos. The company has offered to buy back Mr Cruz shares for 215,500 pesos. At what interest rate would the company's offer be equivalent to the worth of the stock last year?