paying someone in India $20 per article is certainly not slavery. Twenty bucks is equivalent to at least $50 or more
There you go with the decimal points again. At current exchange rates, it's more like $500.
$10,000/month = $2500/week = $60/hour for a 40-hour workweek. (Sorry, can't remember where the "approximately equals" sign lives on this keyboard. Will someone pay me for the time to research it?) So $10 = in the vicinity of 10 minutes.
Yes, it is physically possible to crank out 100 words in ten minutes, provided you don't take time to research, proofread or any other allied activity. Say, the literary level of your average Forums post. You owe me ten dollars.