kindly answer the following with solution, thankyou

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Find the periodic payment of each of the following: Present Value No. of Payments Deferred Payments Rate a. P5,000 10 years 4 years 47 m= 12 b. P10,000 12 years years 5%, m=1 say 25 3 c. P12,500 5 years years 6%, m= 4 4 d. P 50,000 som 5 years 3 years m= 2 e. P20,000 10 years 4 years 7.5%, m= 4 You need to put a new roof on a building in 10 years at an estimated cost of P20,000. How much will you invest every month, so by earning interest at 5% compounded monthly, there will be P20,000 in the bank after 10 years