What if I deposited 20$ .. Can I make them 100$ in less time?
If your starting from $0 then you'll have to do some work to get the initial money. You can work in signature/bounty campaigns or you can charge for any skills you have such as marketing, programming, etc. If your starting with $20 and you want to trade, you can definitely make $100 in 2-3 months but you can just as easily lose that $20 in the same time period or less.
Nothing is impossible if other people will have that mindset like working with signature or bounty jobs here. But its not easy task to do because most of the people were expecting easy job, and sadly they're wrong about that. If you're a hardworking person I guess you can achieve that $100 goals if you trade those bounty tokens you'll have from bounty earnings, and the advantage is you can use that for holdings so you can trade the tokens you have at listed trading sites.