Four different electronic devices make a beep after every 30 minutes, 1 hour, 3/2 hours and 1 hour and 45 minutes respectively. all the devices beeped together at 12 noon. when will they beep together again?
Answers
The Interval between the beep by all 4 devices are 30 min , 60min, 90min, 105min.
They beeped together at 12 noon .
The time after which they beep together = LCM of (30,60,90,105) min
The time after which they toll together = 1260 min
The time after which they toll together = (1260/60) hours
The time after which they toll together = 21 hrs
So they will beep together at 9a.m. the next day .
Hope u get this with less doubt but still if it is there comment below .
Answer:
The Interval between the beep by all 4 devices are 30 min , 60min, 90min, 105min.
They beeped together at 12 noon .
Step-by-step explanation:
The time after which they beep together = LCM of (30,60,90,105) min
The time after which they toll together = 1260 min
The time after which they toll together = (1260/60) hours
The time after which they toll together = 21 hrs
So they will beep together at 9a.m. the next day .