haha, if they had such a successful business model to give such a gigantic profit in a short time then they wouldn't have needed your investment

Rather invest in masternodes or new ICO projects. There many that would appreciate your investment.
in other words you are telling him to escape one scam and run towards another (ICO).
as for masternodes, they are super risky because first of all you have to store a large amount of cryptocurrency in an online wallet that could be hacked. then there is the fact that you are buying a large amount of an altcoin and we know how altcoins get dumped hard. that dump can easily eat through your profit and your capital at the same time.