Posted by **susan** on Friday, July 22, 2011 at 7:35pm.

lily left house at 11.43 am and travelled to town, a distance of 31km. She arrived there at 12.09pm. What was the average speed in km/h and m/s.[ans:71.54 km/h & 19.87 m/s]

my answer is

~31/1.1=28.18 km/h

~31000/3960=7.83 m/s

can some1 show me the calculation if im wrong.

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