Magareit plans to save $200 a month, starting today, for twenty years. Frederico plans to save $225 a month for twenty years, starting one month from today. Both Magareit and Frederico expect to earn an average return of 9.5 percent on their savings. At the end of the twenty years, how much less Magareit will have than Frederico?

Also, what formuals would apply for this??