(Solving for n) Jack asked Jill to marry him, and she has accepted under one condition: Jack must buy her a new $310,000 Rolls-Royce Phantom. Jack currently has $45,900 that he may invest. He has found a mutual fund with an expected annual return of 5.9% in which he will place the money. How long will it take Jack to win Jill's hand in marriage? Ignore taxes. (round to 1 decimal place)