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Question 159672This question is from textbook Algebra and Trigonometry Structure and Method book 2
: I have been struggling to figure out this problem and I was wondering if someone could help me? Please and Thank You!! I would deeply appreciate it!!
Problem Solving: Using Systems
Marcia flew her ultralight plane to a nearby town against a head wind of 15km/h in 2 h 20 min. The return trip under the same wind conditions took 1 h 24 min. Find the plane's air speed and the distance to the nearby town. This question is from textbook Algebra and Trigonometry Structure and Method book 2

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
D=RT
D=(R-15)*2.33
D=(R+15)*1.4
(R-15)*2.33=(R+15)*1.4
2.33R-35=1.4R+21
2.33R-1.4R=21+35
.93R=56
R=56/.93
R=60 KM/H FOR THE ULTRALIGHT.
PROOF:
(60-15)*2.33=(60+15)*1.4
45*2.33=75*1.4
105=105