What range do Monks get when using Ki to launch deflected missiles back at attackers?

@OG_Captain_MELApologies if you’ve answered, but what range do Monks get when using Ki to launch deflected missiles back at attackers? "what range do Monks get when using Ki to launch deflected missiles back at attackers?" A range of 20/60 is a good default.

— Jeremy Crawford (@JeremyECrawford) December 9, 2014