One traffic light flashes every 6 seconds. Another traffic light flashes every 9 seconds. If they flash

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One traffic light flashes every 6 seconds. Another traffic light flashes every 9 seconds. If they flash together and you begin counting seconds, how many seconds after they flash together will they next flash together?
F. 6
G. 9
H. 18
J. 36
K. 54

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Related Book For  answer-question

10 ACT Practice Tests

ISBN: 9780071591461

2nd Edition

Authors: Steven Dulan

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