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A string of holiday lights at a store has three colors that flash at different times. Red lights flash every fifth second. Blue lights flash every third second. Green light flashes every four seconds. The store owner turns on the lights. After how many seconds will all three lights flash at the same time for the first time?

Sagot :

Answer:

60

Step-by-step explanation:

You need the least common multiple of 5, 3, and 4.

5 = 5, 10, 15, 20, 25... 60

3= 3, 6, 9...60

4=4, 8, 12, ...60

Answer:60 seconds

Step-by-step explanation:

You need to find the least common multiple of 5,3,and 4 witch is 60

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