An airplane cruises at 880km/h relative to the air. it is flying from denver, colorado, due west to reno, nevada, a distance of 1200km, and will then return. there is a steady 90km/h wind blowing to the east. what is the difference in flight time between the two legs?

Explanation:

While airplane is flying from Denver to Colorado

then the speed of plane is opposite to that wind speed

so here time to reach the destination is given as

Now while its return Journey we know that air is flowing in the same direction as that of airplane motion

so we will have

So total time leg in two travels is given as

terd muffin is the correct answer