You and your friends watched the latest movie at the movie theater. The movie was 3 hours and 12 minutes long. You all left the movie theater at 18:30. At what time did the movie start?
Q. You and your friends watched the latest movie at the movie theater. The movie was 3 hours and 12 minutes long. You all left the movie theater at 18:30. At what time did the movie start?
Convert to minutes: Convert the movie length to minutes: 3hours×60minutes/hour=180minutes. Add the 12minutes to get the total movie length in minutes.180minutes+12minutes=192minutes.
Subtract from end time: Subtract the movie length in minutes from the end time, which is 18:30. First, convert 18:30 to minutes: 18 hours ×60 minutes/hour =1080 minutes +30 minutes =1110 minutes.1110 minutes −192 minutes =918 minutes.
Convert back to hours: Convert 918 minutes back to hours and minutes. 918 minutes /60 minutes/hour =15 hours and 18 minutes. But 15 hours is actually 3 PM, not the correct start time.
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