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Sedaia [141]
2 years ago
6

Earl E. Bird se levanta às 8h para trabalhar. Quando ele dirige a uma velocidade média de 40 mph, ele se atrasa 3 minutos. Quand

o ele dirige a uma velocidade média de 60 mph, ele está 3 minutos adiantado. Quantas milhas por hora ele precisa dirigir para chegar ao trabalho exatamente na hora certa?
Mathematics
1 answer:
tatiyna2 years ago
3 0

Answer: 48 millas por hora

Step-by-step explanation: 40t + 2= 60t - 3,  es t = .25.

la distancia de su casa a su trabajo es 40(0.25 +0.05) =12 millas allí para su velocidad promedio debería ser 12/0.25 = 48 millas por hora

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