Mathematics, 21.05.2021 19:30 chimmyy14
The battery in a portable music player is guaranteed to last 17 hours without charging if it is used with headphones and 3 hours if it is used with speakers. If you use headphones and speakers for equal amounts of time, how many minutes will a fully charged battery last?
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The battery in a portable music player is guaranteed to last 17 hours without charging if it is used...
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