Peter Singer has done the math, and it is possible to reduce by half global hunger and extreme poverty, with modest numbers (old article, but I just found it):
https://www.nytimes.com/2006/12/17/magazine/17charity.t.html
Peter Singer has done the math, and it is possible to reduce by half global hunger and extreme poverty, with modest numbers (old article, but I just found it):
https://www.nytimes.com/2006/12/17/magazine/17charity.t.html