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5 March, 08:44

Amanda composed 2 songs. The longer song is 126 seconds less than twice the length of the short song. The longer song lasts 286 seconds. How long is the shorter song.

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  1. 5 March, 10:40
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    LongSong = 286s

    LongSong = 2 * ShortSong - 126s

    =>

    2 * ShortSong - 126s = 286s

    2 * ShortSong = 286s + 126s

    2 * ShortSong = 412s

    ShortSong = 206s
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