If he runs 6 times around a 400m track, then he has run 6x400m= 2400m. This takes him 12 minutes. 1km is 1000m. So, he runs 2.4 km in 12 minutes. To run 1km, we divide 12 by 2.4.
12/2.4= 5 minutes to run 1 km.
Stephanie D.
asked 01/07/16
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