SOLUTION: Jill's plane can fly 150 mph without any wind. She flies 1800 miles against the wind to visit her mother, than flies another 1800 miles back home with the wind. If the total flight
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Question 1055172: Jill's plane can fly 150 mph without any wind. She flies 1800 miles against the wind to visit her mother, than flies another 1800 miles back home with the wind. If the total flight time was 25 hours what was the speed of the wind. Answer by jorel555(1290) (Show Source):
You can put this solution on YOUR website! Let w stand for windspeed. Then:
1800/(150+w)+1800/(150-w)=25
1800(150-w)+1800(150+w)=25(22500-w²)
25w²-22500=0
w²=900
w=30,-30
Throwing out the negative result, we get the wind speed to be 30 mph. ☺☺☺☺
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