21 For the next 20 years you plan to invest $600 a month in a stock account earning 7 percent and $400 a month in a bond account earning 4 percent. When you retire in 20 years, you will combine your money into an account with a return of 5 percent. You will take monthly withdrawal from this account for a 25 year period in retirement Required 1 how much money do you have at the end of the 20 year period 2. How much can you withdraw each month over the year period in retement