your grandmother went to the market at 8:30 and came back at 10:45 . How long was she out ?
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she was out for 2 hours and 15 minutes.
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this section we will learn how to convert between the different time formats, how to convert between different units of time and how to calculate elapsed time. Unlike units for measurement, volume and weight, units of time are not metric: the units are not multiples of \(\text{10}\) or \(\text{100}\). Rather, there are \(\text{60}\) seconds in \(\text{1}\) minute, \(\text{60}\) minutes in \(\text{1}\) hour, \(\text{24}\) hours in one day and so on. This means we need to be careful, particularly when converting from one unit of time to another.
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