How long it takes to wait after submitting documents of RFE for I-485?

Hello everyone! I hope you can help me just to relieve my stress. I received my RFE April 4th, 2016. It stated that they need ALL PAGES OF MY CURRENT PASSPORT.The following day the 5th of April I sent it right away. April 11th, 2016 they received it… How long does it take to wait of their decision? And by the way my previous visa was T-non immigrant.