Rowe Chambers
04/27/2023 · Senior High School
12. In Muuto P/S, there are 3 bells, one is rung after 30 minutes for nursery, the next after 40 minutes for lower primary and 60 minutes for upper primary. (a) After how many minutes will all the bells ring together? (b) If all lessons begin at \( 7: 30 \) a.m, at what time will all the three bells ring together at the same time again?
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(a) After 120 minutes.
(b) At 9:30 a.m.
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