having trouble stting this problem would apperciate if you show formulas ans steps

Problem 2: You are planning to save for retirement over thc next 30 years. To do this. you Will invest month in u stock account and a month in a bond account. The return of the stock account is expected 10 be II percent. and the bond account Will pay 6 percent. When you retire. you Will combine your money into account with an 8 petrent return. How much can you Withdraw cach month from your account. assuming a 25-year withdrawal period?