Question 1129992: flying against the wind, a jet travels 4020 mi in 6 hours. flying with the wind, the same jet travels 8910 mi in 9 hours. what is the rate of the jet in still air and what is the rate of the wind?
Rate of the jet in still air:?
rate of the wind:?
Answer by ikleyn(52788)   (Show Source):
You can put this solution on YOUR website! .
u - v =  = 670 mi/h is the effective speed of the plane against the wind.
u + v =  = 990 mi/h is the effective speed of the plane with the wind.
v =  = 160 miles per hour is the speed of the wind.
For your info: the speed of the wind of 160 mi/h is more than the air speed in the eye of a hurricane.
The input data in the problem is NOT realistic.
------------------
In this spot, a real problem from a real student could be placed, who really needs help - instead of these fantasies.
=================
Hello,
after posting my solution to you, I got your comment regarding my words "The input data in the problem is NOT realistic."
My solution is correct, and these my words are correct, too - there is no doubt.
It happens often that textbooks have errors/(mistakes).
In this case, as in other similar cases, you must say "Thanks" to me first for I solved the problem for you,
and then say "Thanks" to me again for pointing your attention that the input data is unrealistic.
And I really expect that you will do it.
=================
Regarding my words ". . . In this spot . . . " - it was a joke, obviously.
Excuse me, please, if you find it rude.
|
|
|
