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24.11.2019 •
Mathematics
Andrea watched 10 videos online this week. the documentaries are 1 hour long, the cartoons are 20 minutes long, and the vine compilations are 15 minutes long. since she was studying most of the time, the number of documentaries she watched was equal to the number of times she watched the other two types of videos combined. she watched videos for a total of 6 hours and 20 minutes. how many of each type of video did she watch?
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Ответ:
27
Step-by-step explanation:
39+4=43
27, 31, 35, 39, 43