<PRE><B>Question 941479</B>
A helicopter travels to its destination in 3 hours with a 10 mile per hour headwind. The helicopter returns the same distance traveling at the same rate in 2.5 hours, this time with a 10 mile per hour tailwind.
What is the total distance the helicopter traveled?
***
let x=speed of plane with no wind
x-10=speed of plane with headwind
x+10=speed of plane with tailwind
distance=travel time*speed
..
3(x-10)=2.5(x+10)
3x-30=2.5x+25
.5x=55
x=110
x-10=100 mph (speed of plane with headwind)
distance=3*100=300 
Total distance the helicopter traveled=300 miles</PRE>