crowdsourcing: How much budget jollibee package for 20kids?

You can go here http://jollibeeparty.com/ to find out. It'll ask you which branch, the date, how many people, the menu, prizes, etc. and it'll compute based on your requirements :)

This article can help: http://shiningmom.com/jollibee-kids-party-packages/

Php 100 per head will do.