Question 366321
speed in still air = x mph
speed of wind = y mph


600/(x-y)= 1.5
1.5x-1.5y=600
/1.5
x-y=400....................1
600/(x+y)= 1
600 = x+y...................2
add 1 & 2
2x=1000
/2
x= 500 --------- speed in still air.
Total distance = 1200 miles
speed = 500 mph
time when no wind = 1200/500
=2.4 hours
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