Answer:
250 mph
Step-by-step explanation:
Speed of car = Distance / Time =
The speed of the plane was 200 mph faster than the speed of the car.
Speed of car = X mph
Speed of plane = 200 + X mph
Evans drove 250 miles in the same amount of time...
Speed = Distance / Time
Time = Distance / Speed
T = 250 / X ........(i)
same amount of time that it took a turbo propeller plane to travel 1250 miles.
Time = Distance / Speed
T = 1250 / (200 + X) .......(ii)
Substitute the value of T in eqn (i) to eqn (ii)
250 / X = 1250 / (250 + X)
250 (200 + X) = 1250 X
50000 + 250 X = 1250 X
1250 X - 250 X = 50000
1000X = 50000
X = 50000 / 1000 = 50
Speed of plane = 200 + X mph = 200 + 50 = 250 mph
