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15 September, 14:28

Donna is running around a track. It takes her 3 1/2 minutes to run 1/4 of a lap. If she keeps running at the same speed, how long will it take her to run 5 laps?

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  1. 15 September, 18:05
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    70 minutes

    Step-by-step explanation:

    3 1/2 : 1/4 = 14 * 5 = 70

    so you first make 3 1/2 to an improper fraction, then you find the greatest common denominator between 7/2 and 1/4 which is 4, so you multiple 7/2 by 2 and get 14/4 and divide that by 1/4 and get 14minutes now multiply that by 5 laps and receive 70 minutes.
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