three bells toll at intervals of 12 min 20 min and 24 min respectively if they start by ringing together after how long will they all right align again
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They all will right align again after 2 hours.
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120
Step-by-step explanation:
Answer: 120 mins.
Explanation:
First ring together of three bells.
12,24,36,48,60,72,84,96,108,120
20,40,60,80,100,120
24,48,72,96,120
Then they all ring again exactly 120 mins again at the time of 240 mins.
120,132,144,156,168,180,192,204,216,228,240
120,140,160,180,200,220,240
120,144,168,192,216,240
240-120=120
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