A laboratory experiment runs for 2 hours 45 minutes each day. If it continues for 12 days, find the total time spent in hours.
33
The daily duration of 2 hours 45 minutes equals \(2 \times 60 + 45 = 165\) minutes.
Over 12 days, the total time is \(165 \times 12 = 1980\) minutes.
Converting to hours, \(\frac{1980}{60} = 33\) hours.
Hence, the total time spent is 33 hours.
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