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lara31 [8.8K]
3 years ago
8

a red string of holiday lights blinks once every 3 seconds while a string of blue lgihts blink once every 4 seconds. how many ti

mes with both sets of lights blink at the same time in 1 minute
Mathematics
1 answer:
gavmur [86]3 years ago
6 0
The highest common factor of 4 and 3 is 12
one minute has 60 secs
thus it will blink 60/12=5 times
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Answer:

It's steepness decreases

Step-by-step explanation:

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in a hotel ,100 bulbs each of 60W are lightened for 6 hours a day and 40 fans each of 50Wvate run for 10 hours a day . calculate
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Step-by-step explanation:

See attached for explanation.  I converted watt*hr to kW*hr by dividing by 1000.

Fans Bulbs  

 40         100  

 50          60      W

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20000 36000 W*hr/day

 30          30 days/month

600000 1080000    W*hr/month

  600      1080   kWhr/month

 

Total = 1680 kWhr/month

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