Question

Three bells toll at intervals 9,12, 15 minutes respectively. if they start tolling together, after what time will they toll together again

Answer 1

Answer:

180/60=3 hours

Step-by-step explanation:

get LCM the three digits

the LCM is 180

this 180 is in minutes

convert to hours;

1 hour has 60 minutes

=180/60=3 hours