please answer 3-5 thank you

1. If P245,000 is invested for 4 years compounded quarterly, at what rate was it invested if it accumulated to P300,000? 2. At what rate converted semi-annually will a given principal triple its value in 5 years? 3. Jeff borrowed P210,000 with interest at 12% compounded quarterly and agreed to pay P300,000 to settle this dept. For how long was the money borrowed? 4. On January 5, 2011, Jan deposited P15,000 in a fund paying interest at 11.5% compounded annually. On what date will her money double its value? 5. When will P15,000 amount to P35,500 if it is invested at 14% converted semi-annually