Rodulpho takes 12 mins to run 6 times around a 400-meter track. assuming he runs at a constant speed , how long does he take to run 1 kilometer?

First you have to find out how far he ran in 12 minutes

Now we can set up a proportion to find out how long it took him to run 1000 meters or 1 kilometer

We can solve to figure out that x = 5 so it took him 5 minutes to run 1 kilometer

It will take him 5 days