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Mathematics 11 Online
OpenStudy (anonymous):

The teacher kept track of how long it took students to finish a test. After 20 minutes, 3 students had finished the test. How long did it take until 8 students were finished? A. 10 minutes B. 50 minutes C. 60 minutes D. 80 minutes help♥♥ http://static.k12.com/calms_media/media/1428500_1429000/1428907/1/05629760267b2799db35b3a72b0de76361696de5/Math_Yellow_131030_151127.jpg

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