英語翻譯
Mary Smith is just 25 and beginning to save for retirement.She is planning to save 10% of her salary in a Roth 401k each year at the beginning of each year (of course this is somewhat unrealistic).Her salary is currently $60,000 per year.Her company matches the first 6% of her salary by putting in $1 for every $2 that Mary puts in.Her salary is expected to grow 4% per year until retirement at age 65 (at the beginning of the year).At that time,she expects to live another 30 years.Prior to retirement,Mary expects to earn 8% per year while during retirement she expects to earn 5% per year due to a more conservative allocation.Ignore taxes for all calculations.