An electronic device makes a beep after every 15 minutes. Another device makes a beep after every 20 minutes. They beeped together at 6:00 am. At what time will they next beep together
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Step-by-step explanation: 7 am
Is the answer firsts take out the lcm of 15 and 20 which is 60 then add 60 minutes to 6 A M to get 7 am
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