Question

5. Three bells toll at intervals of 15, 20 & 30 minutes respectively. If they
tolled together at 12 noon, when will they again toll together
a. 12:15 p.m. b. 12:30 p.m. c.1:00 p.m. d.1:30 p.m.
PLS HELP ME ,I HAVE AN EXAM!!!

Answer 1

Answer:

1:00 pm

intervals r. 15,20&30

lcm .... 60min

convert into hours

.... 60/60=1hr

so,. they tolled again. 12+1 =13pm means 1o'clock

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