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One computer in a lab is programmed to back up data at the turn of the minute every five minutes. Another computer is programmed to back up data at the turn of the minute every two minutes. Find the number of times in twenty-four hours that the two computers back up data at the same time.

(Assume that the computers do not back up at the start of the 24-hour period.)

 Dec 10, 2018
 #1
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There are  24 * 60 =  1440 minutes in a 24-hr period

 

The LCM of 2 and 5  = 10

 

So....they back up at the same time every 10 minutes

 

So

 

1440 / 10   =     144 times

 

 

cool cool cool

 Dec 10, 2018

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