please do it in 40 minutes please urgently... I'll give you up thumb definitely

Problem 3. For a certain positive integer n you are given that a4n=17.873551anda2n=11.652296. What is the accumulated value at time 2n of payments of $200 made at the end of years 1,2,,n and payments of $100 made at the end of years n+1,n+2,,2n ? 1 In other words, 8.0% annual effective rate of interest on a compound interest basis was applied for 2006 and 6.0% annual effective rate of interest on a compound interest basis was applied for 2009