Elapsed time across hours is the duration between a starting time and an ending time when the interval crosses one or more hour marks, expressed in hours and minutes. The reasoning involves decomposing the interval into the minutes remaining to reach the next hour and the time thereafter, using clock faces, timelines, or number lines and understanding that 60 minutes make 1 hour; situations involving dates, seconds, or more complex time systems are beyond this scope.
To find elapsed time, count from the starting time to the ending time in parts:
Example: How much time passes from 2:35 to 5:10?
Now combine:
So, the elapsed time is 2 hours and 35 minutes.
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