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posted by Steven on Wednesday, November 13, 2013 at 6:40pm.
Rob practiced 3/5 of his music in 25 minutes. About how long did it take him to practice all his music?
(3/5)25 = (5/5)x 3/5x = 25 x = 25 / 3/5 x = 25 * (5/3) x = 125 / 3 x = 41.67 or about 42 minutes
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