Fred Larsen contributes $345 at the end of every 3 months into an RRSP. Interest on the

Question:

Fred Larsen contributes $345 at the end of every 3 months into an RRSP. Interest on the account is 6% compounded monthly.
(a) What will be the balance after nine years?
(b) How much of the balance will be interest?
(c) If Fred converts the balance after nine years into an RRIF earning 5% compounded monthly and makes equal withdrawals at the end of every three months for eight years, what is the size of the withdrawal?
(d) What is the combined interest earned by the RRSP and the RRIF?