Asked by ravita
                The traffic at 3 different road crossing change after 25 second, 36 second, 54 second, it they start change simantously at 9 am .how long it take for the process to repeat again? 
            
            
        Answers
                    Answered by
            Steve
            
    LCM(5^2,2^2 3^2,2 3^3) = 2^2 3^3 5^2 = 2700
    
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