Question 1055172
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. &#9786;&#9786;&#9786;&#9786;