you guys are good, much better than some of the other high altitude respondents we see here and there.
I purposefully made it vague with 38,000 ft the top of commercial's ceiling, and the hint about assuming 100% O2 from the wimpy mask - not possible in real world.
They all would die.
The inefficiency of ill-fitting loose masks and panic results in far less than 100% intake. Above 31,000 ft, Air Force recommends 100% O2 and to use pressure masks (those thick, strapped-tight black rubber face-imprinting things) and requires it above 40,000 ft.
100% O2 alone will not save you, you need the pressure.
Harvey
PS Charlie Houston of K2 fame and mountaineering medicine did two studies called Operation Everest. You know, stuff like putting pilots in hypobaric chambers and watching them pass out in 20 seconds.
