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svlad2 [7]
3 years ago
9

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?
Mathematics
1 answer:
12345 [234]3 years ago
7 0
5 times
the lcm of 3 and 4 is 12
1 minute = 60 seconds
60 divided by 12 is 5
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147.1 is what percent of 155
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Solution for what is 147.1% of 155

155/x=100/147.1
(155/x)*x=(100/147.1)*x       - we multiply both sides of the equation by x
155=0.67980965329708*x       - we divide both sides of the equation by (0.67980965329708) to get x
155/0.67980965329708=x 
228.005=x 
x=228.005

now we have: 
147.1% of 155=228.005

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