Seudónimo Seudónimo
  • 20-10-2016
  • Mathematics
contestada

if a string of red holiday lights blinks once every 3 seconds while a string of blue lights blink once every 4 seconds. how many times both sets of lights blink at the same time in 1 minutes?

Respuesta :

theshammy123
theshammy123 theshammy123
  • 20-10-2016
5 times
the lcm of 3 and 4 is 12
1 minute = 60 seconds
60 divided by 12 is 5
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