i need help

1. A businessman borrowed Php2,500,000 for 5 years at 5.5% simple interest. What amount must he pay at the end of the term? 2. How long will it take for Php200,000 to amount to half a million pesos if the simple interest rate is 8.25% per annum? 3. What is the accumulated value of Php50,000 for 5 years and 3 months at 6.5% simple interest? 4. How much money should be invested in a financial institution that pays 3.25% simple interest if the amount at the end of 5 years is Php450,000? 5. Find the compound amount and interest on Php50,000 invested for 10 years at 5.25% interest compounded semi-annually. 6. On the birth of his son Zachary, Brian deposited Php100,000 in a trust fund that pays 3.75% interest compounded monthly. How much money is in the trust fund when Zachary reaches his 18th birthday? 7. Leslie and Mackoy both opened a savings account with a starting balance of Php20,000 on the first day of January. Leslie's bank is paying her a simple interest of 8% annually. Mackoy's bank is paying him an interest of 8% compounded annually. Who has a bigger balance at the end of 5 years