SOLUTION: Please help me with this math problem solving: Thank you, really appreciate it. Sorry guys, the first problem was incorrect, I missed another variables in it. But this is the quest
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Question 956727: Please help me with this math problem solving: Thank you, really appreciate it. Sorry guys, the first problem was incorrect, I missed another variables in it. But this is the question:
oh sorry. this is the question:
Dave and Sandy Hartranft are frequent flyers with Delta Airlines. They often fly from Philadelphia to Chicago, a distance of 780 miles. On one particular trip, they fly into the wind, and the flight takes 2 hours. The return trip, with the wind behind them, only takes 1 and 1/2 hours. If the wind speed is the same on each trip, find the speed of the wind and find the speed of the plane in still air.
You can put this solution on YOUR website! Back at you -looks OK now
Let = the windspeed in mi/hr
Let = the speed of the plane in still air in mi/hr = the speed of the plane flying into the wind in mi/hr = the speed of the plane flying with the wind in mi/hr
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Flying into the wind:
(1)
Flying with the wind:
(2)
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(1)
and
(2)
-----------------------
Multiply both sides of ( 1 ) by
and add the equations
(1)
(2)
------------------------
--------------
(1)
(1)
(1)
(1)
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The windspeed is 65 mi/hr
The speed of the plane in still air is 455 mi/hr
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check:
(2)
(2)
(2)
(2)
OK
(1)
(1)
(1)
(1)
OK
