plz solve with explanation

Q4) Find the equinent present value at year o of the following cash flows a) an geniety with an annual amount of A, starting from and of year 3 to end of year 8 plus b-) a lump sum cash How of lat the end of I 1-8% . * Find effective interest rate A= 400 x= 1250 N 7 i 8 % Q2) Find the annual amount of a 5-year canuity, starting at the and of year 3, by converting the following doh flass to the above, Tom Rande han annual amount of A1, starting plus 6 o anndal amount of A2 de another arnas terting of year 8. with an aundal amount of A2, starting from end of year 5 to end A1 = 220 A2-380 : 10%