gyuriana gyuriana
  • 16-08-2016
  • Mathematics
contestada

A test driver has to drive a car on a 1-mile track for two rounds in a way, that his average speed is 60 mph. On his first round his average speed is 40 mph. How fast does he need to drive, to get the right speed average?

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alissiaf alissiaf
  • 16-08-2016
240two hundred fourty
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