Q: 120 (IAS/2003)

Three bells toll at intervals of 9, 12 and 15 minutes respectively. All three begin to toll at 8 a.m. At what time will they first toll together again?
question_subject: 
Logic/Reasoning
question_year: 
2003
question_exam: 
IAS
question_sub_subject: 
Reasoning
question_topic: 
Analytical
stats: 
0,144,88,32,48,144,8