dear tutors!

good day.. can someone help me with this problems? thanks in advance

If money can be invested at 5 '/2% converted quarterly, find the present value of P5,600 due at the end of 3 years and 9 months. * Your answer Find the ordinary interest on P3,700 at 6 '/2% from July 18,1991 to Nov. 7,1992 using exact time. * Your answer How long will it take P4,500 to amount to P6,000, if the interest rate is 5% converted quarterly? * Your answer At what interest rate will P2,050 amount to P3,875 in 4 years and 6 months, if interest is compounded semi- annually? *