100 is deposited into an account at the begining of every 4 years period for 40 years. the account credit interest of an annual effective rate of i. the accumulated value at the end of 40 years is x which is 6 times the accumulated amount at the end of 40 years Calculate x

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%