I need your insight please

[TeamUp]

ok first i live in southern part of the Philippines, i stumble in this forum searching for information regarding bitcoin. I already heard about bitcoin about year 2015 and to obtain it thru mining and was not interested because the investment is so high-cost, the cost of GPUs here in Philippines is so expensive. The thing that got me interest in bitcoin the most was my friend, his status now is so much different from last year ago (if i describe him, he is just a normal person and a very normal family background) but now he have already has his own car(this car is a latest model available in philippines)/business/house etc., in just span of 1 year. But the one thing he say is its all because of "Bitcoin" and wont share other information (i cant blame him if he wont share). So i did my research about Bitcoin/Altcoin and found out that to earn stable bitcoin/altcoin is thru Mining, and found out that the rig for mining was more expensive than before, so im 100% sure, with his status 1 year ago he could not afford a rig (3 GPU rig) to mine Ethereum how much more if he mine bitcoin.

1.So do guys think its possible to earn that much in just a span of 1 year in bitcoin/altcoin?
2.If someone investment on him, what would be the possible setup of his minig rig?
3.The only clue he said is he got everything thru bitcoin but did not say how he get bitcoin, I only assume it was thru mining, Is there other way to earn stable bitcoin? (except in this forum witch thru campaign)
4. Im not sure if its related, but he is spreading news that if you invest $100 (I just converted it to Dollar from Peso) on him, in 15 days he will return with interest of $40, so a total of $140 will return to you in 15days

P/S
Im i jealous of him?  Hell yeah!!!  

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[Vod]

4. Im not sure if its related, but he is spreading news that if you invest $100 (I just converted it to Dollar from Peso) on him, in 15 days he will return with interest of $40, so a total of $140 will return to you in 15days

Sounds like he is running a ponzi.  He's a friend of yours?

[TeamUp]

Not that really a close friend but he is my classmate during collage days, and im very familiar of his family background and even his personal background so it really get my curiosity. That's also cross in mind that he is running a ponzi/scheme (my wife even think he is selling illegal drugs and just put the bitcoin as a front) but i give him a free doubt for now, mybe he is really doing something in related to bitcoin. How about buy and sell of bitcoin? is it possible to profit that much?

[Vod]

That's also cross in mind that he is running a ponzi/scheme

Well, as soon as you change your signature you will get negative trust if it's a ponzi.   We'll figure it out.