Incorrect* answer. It has been discussed at length** that the best method is to consume the inhabitants of orphanages around the world, and the homeless as well. That way, we solve overpopulation, world hunger, panhandling, and BONUS, the empty orphanages can be converted into more useful buildings! We can take the profits of selling succulent child steaks as well as homeless people's flesh, and donate it to the poor! And that, my friends, is how you solve 4 world problems!
*Though it would still work*
**Discussed between my friends and I during recess/lunch at school**