Please Help

Future value of a portfolio. Rachel and Richard want to know when their current portfolio will be sufficient for them to retire. They have the following balances in their portfolio Money market account (MM): $39,000 Government bond mutual fund (GB): $130,000 Large capital mutual fund (LC): $107,000 Small capital mutual fund (SC): $73,000 Real estate trust fund (RE): $87,000 Rachel and Richard believe they need at least $2,500,000 to retire. The money market account grows at 1.5% annually, the government bond mutual fund grows at 6.0% annually, the large capital mutual fund grows at 9.5% annually, the small capital mutual fund grows at 13.5% annually, and the real estate trust fund grows at 5.0% annually. With the assumption that no more funds will be deposited into any of these accounts, how long will it be until they reach the $2,500,000 goal? Rachel and Richard will need to invest their accounts for or more years to reach $2,500,000. (Round to the nearest whole number)