Q) The managing director reached the conference hall 10 minutes before half past twelve and he reached 20 minutes before the chairman. If the chairman was already late by half an hour than the schedule time of interview, what was the schedule time for interview?
Options:
A)50 min. past 12
B) 10 min. past 12
C) 30 min. past 12
D) 40 min. past 12