SOLUTION: A plane with a tail wind makes its 785-mile flight in 2.5 hours. The return flight against the wind takes a half hour longer. What is the wind speed (rounded to the nearest mile p
Algebra ->
Probability-and-statistics
-> SOLUTION: A plane with a tail wind makes its 785-mile flight in 2.5 hours. The return flight against the wind takes a half hour longer. What is the wind speed (rounded to the nearest mile p
Log On
Question 329981: A plane with a tail wind makes its 785-mile flight in 2.5 hours. The return flight against the wind takes a half hour longer. What is the wind speed (rounded to the nearest mile per hour)? Answer by checkley77(12844) (Show Source):
You can put this solution on YOUR website! D=RT
785=R*2.5
R=785/2.5
R=314 MPH. FOR THE FLIGHT WITH THE WIND.
785=R*3
R=785/3
R=262 MPH. FOR THE FLIGHT AGAINST THE WIND.
(314-262)/2=52/2=26 MPH. IS THE SPEED OF THE WIND.
PROOF:
314-26=288 MPH. IS THE SPEED OF THE PLANE IN STILL AIR.
262+26=288 DITTO.
(