@Chris Magistrado, I am going to echo Rick: without checking the math, it seems close to accurate, in the theoretical sense that A*B=C.
Take what I have to say with a grain of salt because I am not a "full-time" flipper. I flip with cash, not loans, mainly because there are not enough deals out there that meet my highly selective acquisition criteria, so no need to pay interest on cash otherwise sitting in a money market account. And, because flips are already risky enough I don't want to add more risk.
So, again, while the numbers are theoretically true, if you are doing that kind of volume, you are by nature becoming less selective. Being less selective means that some of those ten will lose money, some will sit for months on the market, some will return 40%+. Some will have snags with permitting, some will have contractors you need to fire and then pay more for a new crew to come in and fix the job.
I will add my anecdotes: flipping has been good to me and my family, but we do it one the side, when we find a good deal. Typically, this means about one house per year, but we went almost an entire year between flips from mid-'23 (sold one) to mid-24 (bought next).
I no longer have any "full time flipper" friends. I knew several that tried it, and were able to make decent money in 2021 and 2022, but none were able to scale into 10 houses a year and making enough money to make it worth their while. Or, they flip homes, they are agents, they offer client remodel work, etc, so not specifically flippers but dabble in a lot of real estate related areas.
Or, the full timers that started as flippers have since moved into new construction work more than flipping. They will still do the occasional flip, but mostly when a deal presents itself AND they may be between new construction starts so need to keep their teams busy.