Question 1118154:  the time on a digital clock is 5.55. how many minutes will pass before the clock next shows a time with all digits identical?  
 Answer by josgarithmetic(39630)      (Show Source): 
You can  put this solution on YOUR website! Time would first show as  5:55. 
The later time would show , for all digits identical, as  11:11.
 
 
11:11 MINUS 5:55, ; 
11 hour 11 minutes MINUS 5 hours 55 minutes 
10 hours 60+11 minutes MINUS 5 hours 55 minutes 
5 hours 16 minutes
 
 
Time passage in mixed units, 
5 hours 16 minutes.
 
 
Total as minutes, 
316 minutes. 
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