an electronic device makes a beep after every 15 min. another device makes a beep after every 20 min. they beeped together at 6a.m. at what time will they next beep together?
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Answered by
28
They will beep once again at 7 am
LCM of 15and20 is 60and 6am plus 1 hour is 7 am
LCM of 15and20 is 60and 6am plus 1 hour is 7 am
Answered by
18
lcm=60
they will beep together after 60min
therefore they will again beep together at 7am
they will beep together after 60min
therefore they will again beep together at 7am
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