@zoltor Asked:

An airplane flew in a straight line into a headwind for 6 hours, covering 2,550 miles. It then flew in the exact opposite direction (with the headwind now a tailwind behind it) at the same engine speed for 3 hours, traveling an additional 1,725 miles.

How fast would the plane have been flying (in mph) if there was no wind?
A.
75 mph
B.
425 mph
C.
500 mph
D.
575 mph

Question

@zoltor  Asked:   

An airplane flew in a straight line into a headwind for 6 hours, covering 2,550 miles. It then flew in the exact opposite direction (with the headwind now a tailwind behind it) at the same engine speed for 3 hours, traveling an additional 1,725 miles.  

How fast would the plane have been flying (in mph) if there was no wind?
A.
75 mph
B.
425 mph
C.
500 mph
D.
575 mph

joel_the_boss · Answer

Asking for a new user. :) He is new  so can anyone help?

joel_the_boss · Answer

@ganeshie8 Mind helping out? :)  

@mathmath333 Help if you can. : )

p0sitr0n · Answer

calculus I?

love_ranaa · Answer

The average speed with a headwind is 2550/6 = 425 mph.
The average speed with a tailwind is 1725/3 = 575 mph.
The average of these is the airplane speed in still air: 500 mph.
The difference between that speed and either of the others is the wind speed: 75 mph.