1. Invest the $15,000 into a smaller business hoping that the returns will yield the remaining $15,000 in a short period. Note that this has the potential of failing and wasting the already-saved $15,000.
2. Keep the $15,000 while doing other work that will yield the remaining money over a long period.
It’s easy, since I was the one that worked and raise $15,000, all I will do is to maintain my work and raise the remaining $5000. I won’t even try anything stupid which will end up causing me to lose my entire money, if you try to invest in smaller business, it’s might end up failing because that’s not really the business which you want to start, and don’t expect big reward within a short period of time. To me it’s very easy, just have patience and keep on saving, for you to be able to save that big amount of money, then $5000 should be a problem. The only thing that will make me ask anyone to change their plans is maybe they end up be fired from their work, or their job end up being compromised, and they can’t make more money.