They will all ring at 72 seconds from now.
72 is the least common multiple.
Erin B.
asked • 11/08/16There are 4 bells.
There are 4 bells. One bell rings every two seconds, another bell rings every eight seconds, third bell rings every 9 seconds and the final bell rings every 12 seconds. How long will it take for all 4 bells to ring at the same time, if we assume they just rang at the same time?
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