Question

Three bells ring simultaneously at 9:00 a.m. earrings at regular interval of 20 minutes 30 minutes and 40 minutes respectively then next time will ring will bring together is

Answer 1

Answer:

at 11:00 a.m

Step-by-step explanation:

• The l.c.m of 20,30,40 is 120
• 120minutes/60minutes
• 2hours
• 9:00+2:00= 11:00a.m

Answer 2

Then next time will bring together is 11:00 a.m