contestada

Alyn drives 20.4 miles in 17 minutes.
He passes a sign which gives the speed limit as 60 mph.
By how much, in mph, did Alyn's average speed exceed the speed limit?

Respuesta :

mhanifa

Answer:

  • 12 mph

Step-by-step explanation:

Speed = distance/time

  • Distance = 20.4 miles
  • Time = 17 minutes = 17*1/60 hours = 17/60 hours

Speed is:

  • 20.4 : 17/60 =
  • 20.4*60/17 =
  • 72 mph

Alyn exceeded the limit by:

  • 72 - 60 = 12 mph

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