science
posted by destiney .
linda drove 450km from Indianapolis to Milwaukee at 1:00p.m. the next day. She got tired on the trip, so she stopped in Chicago to rest overnight. She arrived in Chicago at2:30p.m. and left for Milwaukee at 11 a.m. the next day what was her average speed while she was on the road?

avg speed= distance/driving time
From your description, I can't find the driving time as when did she leave.
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