A plane averaged 400 mph on a trip going east, but only 280 mph on the return trip. The total flying time in both directions was 8.5 hours. what was the one-way distance?

1400 miles

Step-by-step explanation:

Speed is the time rate of change of distance. It is the ratio of distance to time and is given by the equation:

plane averaged 400 mph on a trip going east, but only 280 mph on the return trip.

The time spent (t₁) in going east is given by:

The time spent (t₂) in going east is given by:

The total time (t) = t₁ + t₂

t = t₁ + t₂ = 8.5 hours

Therefore the one way distance is 1400 miles

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step-by-step explanation: