Did it take Pei more than 2 hours to walk a distance of 10 miles a long a certain trail? ( 1 mile= 1.6 km)
1) Pei walked this distance at an average rate of less than 6.4 km per hour.
2) On average, it took Pei more than 9 minutes per kilometer to walk this distance.
I actually realised while typing why the answer was correct. But it will be nice to see others attempt it.